Dev tools · alternatives · 2026

24 alternatives to OVAPI — Free Browser Based API Client

The free API client with unlimited teammates

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 3 we have checked on their own sites, 3 of them free or with a free tier.

1. 1
   Apidog▲570

   Development teams often struggle with using multiple tools like Postman and Swagger for API design, development, and testing. This fragmented approach leads to outdated API specs and chaotic collaboration. So we built Apidog: a single, unified API platform for team collaboration. It has a beautiful interface that makes it easy to create API spec, generate request data from API spec, validate responses, create mock data, orchestrate test scenarios, and publish API documentation. Apidog = Postman + Swagger + Mock + JMeter.

   2024 · apidog.com · its alternatives →

2. 2
   Dograh▲599

   The open source VAPI alternative

   Aug 2026 · dograh.com · its alternatives →

3. 3
   OpenBotfree▲362

   Grok Bot alternative: free, local, open-source, multiplayer

   29d ago · openbot.run · its alternatives →

4. 4
   Bruno ▲457

   Bruno is the Git-native API client for REST, GraphQL, gRPC and Websocket. A local and open-source solution to Postman. Fast, developer-first, and no cloud syncing.

   2025 · usebruno.com · its alternatives →

5. 5
   Apidog Fast Request▲512

   Develop APIs fast + automatically detect endpoints

   2025 · fastrequest.apidog.com · its alternatives →

6. 6
   Elvafree tier, from $100/mo▲303

   Goodbye, Postman. Your APIs have new consumers

   Sep 2026 · getelva.ai · its alternatives →

7. 7
   Vapi▲547

   Voice AI agents for Developers

   2025 · vapi.ai · its alternatives →

8. 8
   Freebuff▲310

   Free coding agents to kill Claude, Cursor, Replit, and Devin

   Aug 2026 · freebuff.com · its alternatives →

9. 9
   Insomnia REST Client now open-source▲218

   Leading Open Source API Development Platform for HTTP, REST, GraphQL, gRPC, SOAP, and WebSockets

   2017 · insomnia.rest · its alternatives →

10. 10
    Cursor for your API▲473

    Generate, edit, lint & test your API workflow in one place

    2025 · app.getelva.ai · its alternatives →

11. 11
    Insomnia Designer – Open-source collaborative editor for API design▲317

    Leading Open Source API Development Platform for HTTP, REST, GraphQL, gRPC, SOAP, and WebSockets

    2020 · insomnia.rest · its alternatives →

12. 12
    Browser Use Cloud▲379

    Control the web with prompts (open source)

    2025 · browser-use.com · its alternatives →

13. 13
    Dapi 1.0▲97

    Design, preview and track API with the team

    2021 · expireddomains.com · its alternatives →

14. 14
    TeamSpirit▲119

    Stop rambling on video calls and end meetings on time

    2020 · salespot.io · its alternatives →

15. 15
    ProxPi▲13

    A Free, Open Source Proxy for your RESTful API's.

    2022 · its alternatives →

16. 16
    Yapi – FOSS terminal API client for power users▲50

    I shared a previous version of yapi a few months ago in the comments section of a post talking about the insanity of Postman being 'down'. yapi has developed into a more mature project since then! https://github.com/jamierpond/yapi Still very early, but it makes me much more productive vs Postman, Bruno, Insomnia, etc. If youre a nvim/tmux culture human, you might like this!

    Dec 2025 · yapi.run · its alternatives →

17. 17
    Open Agentsfree▲161

    OpenAgents - The collaboration OS for AI agents. Contribute to openagents-org/openagents development by creating an account on GitHub.

    Apr 2026 · open-agents.dev · its alternatives →

18. 18
    OpenBrowser-AI▲76

    Your AI agent is burning 6x more tokens than it needs to just to browse the web. We built OpenBrowser MCP to fix that. Most browser MCPs give the LLM dozens of tools: click, scroll, type, extract, navigate. Each call dumps the entire page accessibility tree into the context window. One Wikipedia page? 124K+ tokens. Every. Single. Call. OpenBrowser works differently. It exposes one tool. Your agent writes Python code, and OpenBrowser executes it in a persistent runtime with full browser access. The agent controls what comes back. No bloated page dumps. No wasted tokens. Just the data your…

    Apr 2026 · openbrowser.me · its alternatives →

19. 19
    Dapi▲83

    A workplace for building API together

    2021 · expireddomains.com · its alternatives →

20. 20
    Postmate Client▲12

    A Fast, Lightweight REST API Client for VS Code

    2025 · marketplace.visualstudio.com · its alternatives →

21. 21
    I wrote a gopher client and decided to put it on GitHub.▲25

    a Gopher client written in C#/WPF with its own quirks. - indrora/foxGopherClient

    2010 · github.com · its alternatives →

22. 22
    Postcat▲16

    A powerful open source, cross-platform API development tool.

    2024 · github.com · its alternatives →

23. 23
    Testnizer — The offline API client▲3

    Offline, open-source API client. Your data never leaves.

    Jul 2026 · testnizer.com · its alternatives →

24. 24
    Spafe API▲9

    Free, no token, use of OpenAI (and not only) APIs

    2024 · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →