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Flowcat
Self-hosted Rust runtime for real-time voice AI agents
Flowcat is an Apache-2.0 native-Rust runtime for real-time voice AI agents (phone + WebRTC). It runs a full voice pipeline — STT · LLM · TTS, or a single speech-to-speech model — as one self-contained binary you host in your own VPC or fully air-gapped. No hosted control plane, no per-minute billing; bring your own provider keys and a call's audio never leaves your infra. pipecat-compatible pipeline, native SIP/RTP, and dense enough to hold thousands of concurrent calls per box.
Hi PH! I built Flowcat because most voice-agent platforms are hosted SaaS — your call audio flows through someone else's cloud and you pay per minute. Flowcat is the opposite: one Rust binary you own and run yourself. It's a clean-room counterpart to pipecat's architecture, compiled to a single static binary — no GC/GIL, so one process stays flat across thousands of concurrent calls. Apache-2.0, pre-1.0, built in the open. Writeup + benchmark: https://dev.to/iam_suriyan_b9078... — would love your feedback!
Spun up the binary locally with a Pipecat pipeline and was honestly surprised how little config it took to get SIP calls flowing. The fully self-contained, no-control-plane angle is a nice change of pace from the usual cloud-tied stacks.
About Flowcat on Product Hunt
“Self-hosted Rust runtime for real-time voice AI agents”
Flowcat was submitted on Product Hunt and earned 0 upvotes and 2 comments, placing #125 on the daily leaderboard. Flowcat is an Apache-2.0 native-Rust runtime for real-time voice AI agents (phone + WebRTC). It runs a full voice pipeline — STT · LLM · TTS, or a single speech-to-speech model — as one self-contained binary you host in your own VPC or fully air-gapped. No hosted control plane, no per-minute billing; bring your own provider keys and a call's audio never leaves your infra. pipecat-compatible pipeline, native SIP/RTP, and dense enough to hold thousands of concurrent calls per box.
Flowcat was featured in Open Source (68.6k followers), Artificial Intelligence (473.1k followers) and GitHub (41.3k followers) on Product Hunt. Together, these topics include over 142.9k products, making this a competitive space to launch in.
Who hunted Flowcat?
Flowcat was hunted by Suriyan Dhanapal. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Suriyan Dhanapal