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Thoughtly alternatives · AI Agents

Open-source alternatives to Thoughtly

Thoughtly is not described as open source on its own site. 23 of the 101 other AI agents in this directory are open source, according to their own sites.

Thoughtly's current pricing could not be confirmed from its own site. 21 of them are free or have a free plan.

23 tools · Listings checked up to Nov 12, 2026 · Where the facts come from

The 12 closest to Thoughtly

  1. Letta

    Stateful agents with long-term memory, from the MemGPT team

    • Letta has a free plan. Thoughtly does not.
    • Letta is open source, according to its own site.
    • Thoughtly also covers voice cloning.
    Letta pricing and details

  2. AutoGPT

    Open-source agent platform with a hosted team of AI Experts

    • AutoGPT has a free plan. Thoughtly does not.
    • AutoGPT is open source and self-hostable, according to its own site.
    • Thoughtly also covers voice cloning.
    AutoGPT pricing and details

  3. Dify

    Open-source platform for building AI agents and agentic workflows

    • Dify has a free plan. Thoughtly does not.
    • Dify is open source and self-hostable, according to its own site.
    • Dify also covers no-code.
    • Thoughtly also covers voice cloning.
    Dify pricing and details

  4. Kortix

    Open-source platform for running AI agents from a git repo you own

    • Kortix has a free plan. Thoughtly does not.
    • Only Kortix lists macOS, Windows, Linux, iOS and Android apps.
    • Kortix is open source and self-hostable, according to its own site.
    • Thoughtly also covers voice cloning.
    Kortix pricing and details

  5. goose

    Open-source AI agent with a desktop app, CLI and API

    • goose has a free plan. Thoughtly does not.
    • Only goose lists macOS, Windows and Linux apps.
    • Only Thoughtly lists a web app.
    • goose is open source, according to its own site.
    goose pricing and details

  6. Sim

    Open-source workspace for building and running AI agents

    • Sim has a free plan. Thoughtly does not.
    • Only Sim lists a macOS app.
    • Sim is open source and self-hostable, according to its own site.
    • Thoughtly also covers voice cloning.
    Sim pricing and details

  7. Agenta

    Open-source workspace for building team AI agents and automations

    • Agenta has a free plan. Thoughtly does not.
    • Agenta is open source and self-hostable, according to its own site.
    • Agenta also covers templates and no-code.
    • Thoughtly also covers voice cloning.
    Agenta pricing and details

  8. SuperAGI

    AI-native sales apps and agents, from the open-source agent project

    • SuperAGI is open source, according to its own site.
    • SuperAGI also covers sales pipeline.
    • Thoughtly also covers voice cloning.
    SuperAGI pricing and details

  9. Mastra

    TypeScript framework for building and running AI agents

    • Mastra has a free plan. Thoughtly does not.
    • Mastra is open source and self-hostable, according to its own site.
    • Thoughtly also covers voice cloning.
    Mastra pricing and details

  10. E2B

    Cloud sandboxes where AI agents run code and tools

    • E2B is open source, according to its own site.
    • Thoughtly also covers workflow automation and voice cloning.
    E2B pricing and details

  11. Mem0

    Memory layer that lets AI agents remember across sessions

    • Mem0 has a free plan. Thoughtly does not.
    • Mem0 is open source and self-hostable, according to its own site.
    • Thoughtly also covers workflow automation and voice cloning.
    Mem0 pricing and details

  12. OpenClaw

    Open-source personal AI agent you run yourself and message in chat

    • OpenClaw has a free plan. Thoughtly does not.
    • Only OpenClaw lists macOS, Windows, Linux, iOS and Android apps.
    • OpenClaw is open source and self-hostable, according to its own site.
    • OpenClaw also covers chat assistant.
    OpenClaw pricing and details

11 more that are open source

All 23 in one table

Common questions

Is there an open-source alternative to Thoughtly?

Yes. Letta, AutoGPT, Dify, Kortix, goose, Sim, Agenta, SuperAGI and 15 more are open source, according to their own sites.

Is Thoughtly open source?

Thoughtly is not described as open source on its own site. The listing was checked on Nov 12, 2026 against the pages it cites.

Which of these AI agents are free?

Letta, AutoGPT, Dify, Kortix, goose, Sim, Agenta, Mastra and 13 more are free or have a free plan.

When was this checked?

Each listing shows its own date. On this page they run from Oct 5, 2026 to Nov 12, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.

This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to Thoughtly: the alternatives its listing names first, then the tools that share the most features with it.