Open-source tools — Works with Twilio

2 match your filters — 2 of them answered our check today.

Watching this group for 20 days · how we check

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Patter SDK

Live

An open-source SDK that gives your AI agent a phone number in a few lines of Python or TypeScript, pitched as the self-hosted alternative to hosted voice-AI platforms like Vapi or Retell. Built for developers who want to own the stack.

Open source
What to know▼
How it works
An open-source SDK that gives an AI agent a phone number in a few lines of Python or TypeScript, using Twilio, Telnyx or Plivo as the underlying carrier.
What's different
Pitched as the self-hosted alternative to hosted voice-AI platforms like Vapi or Retell, for builders who want to own the stack.
Pricing
Open source, MIT licensed.
Best for
Developers building voice AI agents who want to self-host rather than rely on a hosted platform.

Watched for 13 days · last checked 7d ago

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Patter

Live

An open-source, self-hosted SDK that gives your AI agent a real phone number for calls, working with Twilio, Telnyx or Plivo. Built for developers who want to own the voice-AI stack rather than use a hosted vendor.

Open sourceSelf-hosted
What to know▼
How it works
Connects an AI agent to a real phone number in about 4 lines of Python or TypeScript, letting you pick a carrier (Twilio, Telnyx, or Plivo) and voice stack, then run it on your own laptop with a self-hosted dashboard showing each call's cost and latency.
What's different
MIT-licensed and self-hosted, so the developer owns the voice-AI stack instead of routing through a hosted vendor.
Pricing
MIT licensed (free/open source).
Best for
Developers building voice AI agents who want to own the stack rather than use a hosted vendor.
Watch out
Requires a separate account with a carrier such as Twilio, Telnyx, or Plivo to actually place calls.

Watched for 15 days · last checked 9d ago

Details →