Best Application Development Software for Freelancers
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Compare the Top Application Development Software for Freelancers as of July 2025
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What is Application Development Software for Freelancers?
Application development software is a type of software used to create applications and software programs. It typically includes code editors, compilers, and debuggers that allow developers to write, compile, and debug code. It also includes libraries of pre-written code that developers can use to create more complex and powerful applications. Compare and read user reviews of the best Application Development software for Freelancers currently available using the table below. This list is updated regularly.
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1
Twilio
Twilio
Twilio's application development tools empower developers to build robust communication solutions quickly and efficiently. With Twilio's APIs, developers can integrate voice, messaging, and authentication features into their applications, enhancing user engagement and experience. Using Twilio's Programmable Voice API, developers can create applications that handle inbound and outbound calls, implement call tracking, and provide interactive voice response (IVR) systems. The Messaging API allows for sending and receiving SMS, MMS, and WhatsApp messages, enabling real-time communication with users. Twilio's Verify API ensures secure user authentication through SMS, voice, and email verification, protecting applications from fraudulent activities. Additionally, Twilio's Flex platform offers a customizable digital engagement center for sales and support, allowing businesses to tailor customer interactions.Starting Price: $0.0085 per min -
2
Appsmith
Appsmith
Appsmith is an open-source low-code platform designed to help businesses rapidly build custom internal tools and applications. With a drag-and-drop interface and extensive integration capabilities, Appsmith simplifies the development of dashboards, admin panels, and CRUD applications. Developers can also customize functionality using JavaScript, while seamless integration with databases and APIs makes it highly versatile. It supports self-hosting and enterprise-grade security features such as role-based access controls, audit logging, and SOC 2 compliance, making it suitable for organizations of all sizes. Appsmith's AI-powered agent platform enables businesses to build custom conversational agents tailored to their specific needs. These agents can be embedded into various business workflows, enhancing support, sales, and customer success teams. By leveraging data-driven AI, the platform automates tasks and scales operations efficiently.Starting Price: $0.4/hour/user -
3
Site24x7
ManageEngine
ManageEngine Site24x7 is a comprehensive observability and monitoring solution designed to help organizations effectively manage their IT environments. It offers monitoring for back-end IT infrastructure deployed on-premises, in the cloud, in containers, and on virtual machines. It ensures a superior digital experience for end users by tracking application performance and providing synthetic and real user insights. It also analyzes network performance, traffic flow, and configuration changes, troubleshoots application and server performance issues through log analysis, offers custom plugins for the entire tech stack, and evaluates real user usage. Whether you're an MSP or a business aiming to elevate performance, Site24x7 provides enhanced visibility, optimization of hybrid workloads, and proactive monitoring to preemptively identify workflow issues using AI-powered insights. Monitoring the end-user experience is done from more than 130 locations worldwide.Starting Price: $9.00/month -
4
Pdftools
PDF Tools
Whether you have thousands of documents or millions, Pdftools has the products and services to help make processing a breeze. Designed for document-heavy industries, Pdftools’ suite of SDKs and APIs are here to make your document workflows easier, faster, and stress-free. Built on SDKs and APIs, the Pdftools products integrate seamlessly into your existing (or new) systems and applications. Process thousands of documents every minute. Our tools are precision-engineered to be efficient and run at blazing speeds. We’re engineers at heart, so we’re only satisfied with the most reliable, orderly, and usable, and well-documented platforms. Shrink file sizes down, but keep the quality and interactivity. Your documents will always be compliant for long-term archiving. We’ve obsessed over every detail in our products, and documented everything so it’s easy to get started.Starting Price: $0/month/user -
5
Twilio Messaging
Twilio
Twilio's Messaging API is a powerful tool that enables businesses to integrate messaging capabilities into their applications seamlessly. It offers a stable RESTful API that allows developers to send and receive SMS, MMS, and WhatsApp messages globally. With Twilio's Messaging API, businesses can automate and scale their communications, ensuring messages are delivered over the preferred channels of their customers. The API supports a variety of sender types, including long codes, short codes, toll-free numbers, and alphanumeric sender IDs, providing flexibility in how messages are sent. Additionally, Twilio's Messaging Services feature allows companies to group global senders and enable intelligent sending, automating sender selection, and handling compliance regulations. The API also supports inbound webhooks, allowing businesses to handle responses programmatically and engage in two-way conversations with their customers.Starting Price: $0.0079 per message -
6
Apryse PDF SDK
Apryse
Apryse, previously known as PDFTron, takes document solutions to the next level, making work better and life simpler. Bring PDF viewing, annotating, editing, creation, and generation to any web, mobile, desktop or server framework or application. As a global leader in document processing technology, Apryse gives developers, enterprise customers and small businesses the tools they need to reach their document goals faster and easier. Our product portfolio includes Apryse SDK, Fluent, iText and XODO. Apryse technology works with all major platforms and a wide variety of unique file types. -
7
ManageEngine OpManager
ManageEngine
OpManager is a network management tool geared to monitor your entire network. Ensure all devices operate at peak health, performance, and availability. The extensive network monitoring capabilities lets you track performance of switches, routers, LANs, WLCs, IP addresses, and firewalls. Monitor the finer aspects of your network: Hardware monitoring enables CPU, memory, and disk monitoring, for efficient. performance of all devices. Perform seamless faults and alerts management with real-time notifications and detailed logs for quick issue detection and resolution. Achieve network automation, with workflows enabling automated diagnostics and troubleshooting actions. Advanced network visualization-including business views, topology maps, heat maps, and customizable dashboards give admins an at-a-glance view of network status. 250+ pre-built reports covering metrics like device performance, network usage, uptime, facilitate capacity planning and improved decision-making.Starting Price: $95.00/one-time -
8
Sahi Pro
Tyto Software Pvt Ltd
Sahi Pro is a no-code test automation tool for web, desktop, mobile, and SAP applications. Sahi Pro empowers business testers and automation engineers to streamline their test automation processes. Sahi Pro reduces the time, effort, and complexity involved in test automation, making it an ideal choice for various domains including automobile, healthcare and BFSI. Features: 1. Non-flaky Test Execution - For reliable test results and reduced time wastage in analysis of false-positives or false-negatives. 2. Supports Multiple Technologies - Achieve end to end automation across technologies. 3. No-code Automation - Enable non-technical business testers to automate. 4. Integrations - Integrate and work with your existing ecosystem. Testers using Sahi Pro easily automate complex tests without writing code. With Sahi Pro, you can achieve faster release cycles, improved software quality, & reduced costs. Our customers love Sahi Pro for its speed, flexibility, and ease of use.Starting Price: $1499/year/user -
9
Odoo
Odoo
Odoo is a fully integrated, customizable, open-source software packed with hundreds of expertly designed business applications. Odoo’s intuitive database is able to meet a majority of business needs, such as: CRM, Sales, Project, Manufacturing, Inventory, and Accounting, just to name a few. Odoo is an all-in-one software solution designed to meet the needs of companies, regardless of their size (or budget). The unbeatable, seamless nature of Odoo helps businesses become more efficient by reducing redundant manual processes, which helps companies save countless hours of labor. Every module is interconnected to provide a fully-integrated experience from app to app, and users can automate many processes that would’ve otherwise required manual inputs into multiple applications. Odoo keeps all business functions in one place, allowing teams to collaborate with other departments from one unified platform in the most efficient way possible.Starting Price: $25.00/month/user -
10
DbVisualizer
DbVisualizer
DbVisualizer is one of the world's most popular database editors. With almost 7 million downloads and Pro users in 150 countries worldwide, it won't disappoint you. Free and Pro versions are available. Developers, analysts, and DBAs use it to elevate their SQL experience with modern tools to visualize and manage their databases, schemas, objects, and table data, auto-generate, write, and optimize queries, and so much more. It connects to all popular databases, such as MySQL, PostgreSQL, SQL Server, Oracle, Cassandra, Snowflake, SQLite, BigQuery, and 30+ others, and runs on all popular OSes (Windows, macOS, and Linux). A powerful SQL editor with intelligent autocomplete, visual query builders, variables, and more. You can fully control window layouts, key bindings, UI theme, mark scripts, and database objects as favorites for quick access or even work outside of DbVisualizer. DbVisualizer is also built to meet rigorous security standards, all configurable within the product.Starting Price: Free -
11
Windsurf Editor
Windsurf
The Windsurf Editor is a free AI-powered IDE and AI coding assistant that accelerates development by providing intelligent code generation and agents in over 70 programming languages and more than 40 IDEs, including VSCode, JetBrains, and Jupyter Notebooks. With Windsurf, developers can write code faster, eliminate repetitive tasks, and stay in the flow state—whether they're working with Python, JavaScript, C++, or any other language. Built on billions of lines of open-source code, Windsurf Editor understands and anticipates your coding needs, offering multiline suggestions, automated unit tests, and even natural language explanations for complex functions. It’s perfect for streamlining code writing, reducing boilerplate, and cutting down the time spent on documentation searches. Trusted by individual developers and Fortune 500 companies alike, Windsurf Editor is your go-to solution for boosting productivity and writing better code. Try Windsurf for free today!Starting Price: Free -
12
KrakenD
KrakenD
KrakenD is a high-performance API Gateway optimized for resource efficiency, capable of managing 70,000 requests per second on a single instance. The stateless architecture allows for straightforward, linear scalability, eliminating the need for complex coordination or database maintenance. It supports various protocols and API specifications, with features like fine-grained access controls, data transformation, and caching. Unique to KrakenD is its ability to aggregate multiple API responses into one, streamlining client-side operations. Security-wise, KrakenD aligns with OWASP standards and doesn't store data, making compliance simpler. It offers a declarative configuration and integrates with third-party logging and metrics tools. With transparent pricing and an open-source option, KrakenD is a comprehensive API Gateway solution for organizations prioritizing performance and scalability. -
13
Titan
Titan
Bend, don’t break with Titan’s flexible business solutions and forms for Salesforce. Our scalable Salesforce Forms and software is rapidly developing a reputation as the gold-standard in Salesforce integration, and it’s easy to see why. Slash time to market, nuke code, and tackle any use case on a single platform. Our best-of-breed forms in Salesforce and applications cater to any industry and it’s our mission to provide custom solutions for difficult problems. Build web portals, sign documents, generate docs, send surveys, automate contracts, fill out forms in Salesforce, and so much more in just a few simple clicks. No code required and AI assisted! This is all 100% Salesforce integrated, empowering you to send data to the #1 CRM and pull it back in real-time. No other product on the market does it better or faster. Our customers and partners are the heartbeat of Titan. If you need a feature, simply request it via our Titan X Lab and we will consider it for our roadmap!Starting Price: $12 per month -
14
Kasm Workspaces
Kasm Technologies
Kasm Workspaces streams your workplace environment directly to your web browser…on any device and from any location. Kasm uses our high-performance streaming and secure isolation technology to provide web-native Desktop as a Service (DaaS), application streaming, and secure/private web browsing. Kasm is not just a service; it is a highly configurable platform with a robust developer API and devops-enabled workflows that can be customized for your use-case, at any scale. Workspaces can be deployed in the cloud (Public or Private), on-premise (Including Air-Gapped Networks or your Homelab), or in a hybrid configuration.Starting Price: $0 Free Community Edition -
15
Kubit
Kubit
Your data, your insights—no third-party ownership or black-box analytics. Kubit is the leading Customer Journey Analytics platform for enterprises, enabling self-service insights, rapid decisions, and full transparency—without engineering dependencies or vendor lock-in. Unlike traditional tools, Kubit eliminates data silos, letting teams analyze customer behavior directly from Snowflake, BigQuery, or Databricks—no ETL or forced extraction needed. With built-in funnel, path, retention, and cohort analysis, Kubit empowers product teams with fast, exploratory analytics to detect anomalies, surface trends, and drive engagement—without compromise. Enterprises like Paramount, TelevisaUnivision, and Miro trust Kubit for its agility, reliability, and customer-first approach. Learn more at kubit.ai. -
16
JOpt.TourOptimizer
DNA Evolutions GmbH
JOpt.TourOptimizer is an adaptable component to solve VRP, CVRP, and VRPTW class problems for any route optimization in logistics or similar fields. JOpt.TourOptimizer gives full access to modern optimization strategies and already includes many useful functions and algorithms to model various tour optimization problems. The JOpt.TourOptimizer library is easily integrated into any product. It can be customized to meet special requirements or adapt to the industries’ specific needs in which your software products are used. JOpt.TourOptimizer – enables you to enhance your product or project by seamlessly integrating DNA’s tour and resource optimization engine. It comes as a Java library or in Docker Container utilizing the Spring Framework and Swagger.Starting Price: €995 -
17
Highcharts
Highsoft
Highcharts is a JavaScript charting library that allows developers to create interactive and visually appealing charts for web applications. It offers a wide range of chart types, including line charts, bar charts, pie charts, scatter plots, and more. It also supports different types of data, including CSV, JSON, and even live data streams. One of the key features of Highcharts is its ability to customize the look and feel of the charts. Developers can easily change the colors, font sizes, and other visual elements to match their brand or design. Additionally, it offers a variety of options for making charts responsive, so they look great on any device. Another great feature is the ability to add interactive elements to charts, such as hover effects, tooltips, and click events. This allows developers to create charts that are not only informative, but also engaging for users. Highcharts also supports exporting charts as PNG, JPEG, PDF, or SVG, making it easy to share or print them.Starting Price: $0 -
18
Kevel
Kevel
Kevel (previously Adzerk) gives you the APIs needed to quickly build your own fully-customized ad server for sponsored listings, internal promotions, native ads, and more – so you can take back the Internet and drive more online revenue. Our award-winning platform handles over three billion API requests each day, and it’s helped industry leaders like Yelp and Ticketmaster shorten their build times by more than 90%. -
19
EASA
EASA
EASA has a unique approach to deploying existing, Excel spreadsheet-based tools as secure, custom web applications. These apps can be deployed within a web portal for use by internal or external staff, including partners, resellers, suppliers or customers as well as subscription based applications (SaaS). Unlike competing solutions, sophisticated spreadsheets with VBA, macros and add-ins can be deployed with EASA. Furthermore, EASA provides full database functionality, approvals and notifications and integration with CRM and ERP systems. Common use-cases include the deployment of spreadsheets used for CPQ (configure price quote), insurance raters, financial analytics, engineering calculations, and many more. Your existing spreadsheet becomes the “engine” for the web app, eliminating any need to extract the logic and reprogram in a separate solution. If your company has made a significant investment into critical spreadsheets, then learn why AIG, Voya, HP and others rely on EASA. -
20
Parasoft
Parasoft
Parasoft helps organizations continuously deliver high-quality software with its AI-powered software testing platform and automated test solutions. Supporting embedded and enterprise markets, Parasoft’s proven technologies reduce the time, effort, and cost of delivering secure, reliable, and compliant software by integrating everything from deep code analysis and unit testing to UI and API testing, plus service virtualization and complete code coverage, into the delivery pipeline. A powerful unified C and C++ test automation solution for static analysis, unit testing and structural code coverage, Parasoft C/C++test helps satisfy compliance with industry functional safety and security requirements for embedded software systems.Starting Price: $125/user/mo -
21
Jira
Atlassian
Jira is the only project management tool you need to plan and track work across every team. Jira by Atlassian is the #1 software development tool for teams planning and building great products. Trusted by thousands of teams, Jira offers access to a wide range of tools for planning, tracking, and releasing world-class software, capturing and organizing issues, assigning work, and following team activity. It also integrates with leading developer tools for end-to-end traceability. From short projects, to large cross-functional programs, Jira helps break big ideas down into achievable steps. Organize work, create milestones, map dependencies and more. Link work to goals so everyone can see how their work contributes to company objectives and stay aligned to what’s important. Your next move, suggested by AI. Atlassian Intelligence takes your big ideas and automatically suggests the tasks to help get it done.Starting Price: Free -
22
People Data Labs
People Data Labs
We build workforce data, so you don't have to. People Data Labs provides comprehensive workforce profiles built with quality, coverage, and depth in mind. We collect, standardize, and refresh data, so you can build innovative products.Starting Price: $0 for 100 API Calls -
23
Kiuwan Code Security
Kiuwan
Security Solutions For Your DevOps Process. Automatically scan your code to identify and remediate vulnerabilities. Compliant with the most stringent security standards, such as OWASP and CWE, Kiuwan Code Security covers all important languages and integrates with leading DevOps tools. Effective static application security testing and source code analysis, with affordable solutions for teams of all sizes. Kiuwan includes a variety of essential functionality in a single platform that can be integrated directly into your internal development infrastructure. Fast Vulnerability Detection: Easy and instant setup. Start scanning and get results in just minutes. DevOps Approach To Code Security: Integrate Kiuwan with your Ci/CD/DevOps pipeline to automate your security process. Flexible Licensing Options: Plenty of options, one time scans or continuous scanning. Kiuwan also offers a Saas or On-Premise model. -
24
PrizmDoc
Accusoft
Through a collection of UI components and content manipulation APIs, PrizmDoc provides customizable document processing to help developers deliver in-browser document creation, editing, and collaboration functionality, to enhance their software applications. Our functionality integrates on the client and server side smoothly, creating a seamless experience for both you and your users. Render and display dozens of file types, from Adobe PDFs and Microsoft Office files to CAD and DICOM formats, in a browser without the need to download or open native applications. Designed for seamless integration with your application, our zero footprint HTML5 viewer is fully customizable, from quick integrations with minimal configuration to complete programmatic control using our extensive JavaScript API. -
25
Obkio
Obkio
Network Performance Monitoring Made Easy. Obkio is a simple Network Monitoring and Troubleshooting SaaS solution that allows users to continuously monitor the health of their network and core business applications to improve the end-user experience. The innovative software application identifies the causes of intermittent network, VoIP, video, and applications slowdown in seconds and collect information to quickly troubleshoot problems before they affect your end-users. Deploy network monitoring Agents at strategic locations in a company's offices or network destinations such as data sites, remote sites, external client sites, or public or private clouds to continuously monitor performance using synthetic traffic exchanged every 500ms. Obkio's Agents give you a 360-degree overview of your network by measuring the network metrics like matter most (jitter, latency, packet loss, VoIP quality), and alerting you of any performance degradation.Starting Price: $399 per month -
26
EEZ Studio
Envox d.o.o.
EEZ Studio represents a unique solution when both rapid development of an attractive GUI and remote control of devices for test and measurement (T&M) automation is required. Created by a team with first-hand experience in designing resource-constrained complex embedded devices, EEZ Studio enables the design of responsive desktops and embedded GUIs using the “drag & drop” and flowcharting (EEZ Flow) visual programming. A series of in-house developed Widgets and Actions as well as LVGL support and read-to-go project templates and examples enable rapid prototyping as well as development of final applications. The EEZ Studio contains everything you need to quickly create, test and debug attractive and responsive GUIs, regardless of the level of complexity, and can meet even the most complex requirements. Depending on the type of application, several types of projects are offered in order to simplify development and successfully address the challenges of the chosen target platform.Starting Price: Free -
27
Alpha TransForm
Alpha Software Corporation
The Alpha TransForm no-code app builder lets anyone create cross-platform mobile apps. The software offers unmatched speed, power, and flexibility in the no-code segment, and doesn’t require programming knowledge. Apps can leverage smartphone features (GPS, photos, bar code scanning, audio, digital ink, etc.), and integrate with existing databases and software. Whether you’re looking to collect more accurate data or streamline workflows, Alpha TransForm lets you design, build, and deploy mobile apps with ease: - pre-built app templates you can customize - powerful analytics engine with dashboards you can customize - built-in offline operation - a programming language for adding advanced capabilities - scale-able, secure and reliable cloud deployment. Developers can use Alpha Software's complimentary low-code platform (Alpha Anywhere) which integrates with Alpha TransForm, to build more advanced mobile apps and web apps.Starting Price: $30/User/Month -
28
CSS HTML Validator
AI Internet Solutions LLC
CSS HTML Validator for Windows, Mac, and Linux is a fast, powerful, highly user configurable, and easy to use web development tool that checks HTML, CSS, SEO, spelling, accessibility (including WCAG 2.0/2.1/2.2), PHP, XHTML, JavaScript, htmx, and links. CSS HTML Validator includes batch processing (in the Pro edition), integrated HTML/CSS editing, and much more. It works offline so it's super-fast and your privacy is protected because your documents are not uploaded to a server for checking. CSS HTML Validator Pro has superior customization features so you can configure the validation to your liking. You can even add your own validator messages, recognize your own HTML elements and attributes, and much more. Try CSS HTML Validator Pro for Windows free for 200 validations or 30 days, whichever comes first. A FREE limited version of htmlval for Mac and Linux is also available.Starting Price: $79 (one time) -
29
GigSheets
GigSheets
Gigsheets is the only tool you need to manage your agile project successfully. With all the built-in features on Gigsheets, managing your agile project has never been easier. The built-in timer on Gigsheets automatically tracks changes on tickets, columns and sprints. Each entry will show the name of what you're working on (tickets, columns, etc.), so you will have a clear view of your progress. You can easily export your timesheet to give your clients full transparency on your project. When it comes to tickets, there are various options to customize: - “Watch” Tickets - Link a ticket to an “epic” - Choose the type of ticket (Story, Task, Bug, or Suggestion) - Add checklists - Prioritize, assign, label, and upload attachments Let Gigsheets help you to save time, stay focused and have full transparency into your team's workflow. Be the hero! Sign up for GigsheetsStarting Price: $2.50/per user, per month -
30
Wizzy
Wizzy
Wizzy is an intelligent site search solution for eCommerce website owners. It offers comprehensive site search solutions, such as user-friendly search, user-friendly filter, merchandising, personalisation and analytics. Benefits of using Wizzy -->Quickest Search results -Wizzy can help the end consumer find your products so quickly that they will never visit another site. -->Contextual search results -Since Wizzy is AI-powered, it can understand even if the customer uses a different search term. -->Improved sales -Wizzy search is super accurate and helps your site visitors to find products they love quickly & personalise their search experience, thus increasing your sales. -->Never a zero result -With Wizzy, your customers will never see a zero result page. -->Influencer search results -Wizzy allows D2C brands to create multiple catalogues of products & influence search results with specific catalogues through smart merchandising. Try Wizzy's15-day free trial!Starting Price: $99 per month