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Three months.That’s how long many teams spend building telephony infrastructure before writing a single line of actual conversation logic for an AI voice agent.Not because the AI was hard.Because telephony is brutal.Today, we’re open-sourcing the solution so you don’t have to go through the same pain.The Hidden Problem with AI Calling AgentsBuilding an AI calling agent sounds straightforward:Use an LLMAdd speech-to-textAdd text-to-speechConnect it to a phone numberIn reality, that’s where most teams hit a wall.To make real phone calls, you end up dealing with:SIP trunks & PSTN providersLow-latency, bidirectional audioReal-time orchestration of STT, LLM, and TTSCall state, interruptions, transfersScaling, monitoring, recordings, persistenceThe result?Most teams spend weeks or months on infrastructure before they ever touch the conversation itself.We did too. And eventually asked:“Why is building voice AI still this hard?”Introducing SiphonSiphon is an open-source Python framework that handles the telephony complexity for you, so you can focus on building great conversations.Here’s what a complete AI receptionist looks like with Siphon:from siphon.agent import Agent from siphon.plugins import openai, cartesia, deepgram agent = Agent( agent_name="receptionist", llm=openai.LLM(model="gpt-4"), tts=cartesia.TTS(voice="helpful-assistant"), stt=deepgram.STT(model="nova-2"), system_instructions=""" You are a friendly receptionist for Acme Corp. Help callers schedule appointments or route them correctly. """ ) if __name__ == "__main__": agent.start() Run this, and your agent can answer real phone calls via any SIP provider (Twilio, Telnyx, etc.).What Siphon Handles for You🔌 SIP & PSTN connectivityWorks with any SIP provider, no FreeSWITCH pain.⚡ Real-time audio pipelineBuilt on LiveKit with streaming audio and sub-500ms voice-to-voice latency.🤖 AI orchestrationPlug-and-play support for LLMs, STT, and TTS.Swap providers with a single line: llm=anthropic.LLM(model="claude-3-5-sonnet")📈 Production-ready by default Auto-scaling, call recordings, transcripts, state handling, and observability.Quick StartInstall:pip install siphon-aiCreate an agent:from siphon.agent import Agent from siphon.plugins import openai, cartesia, deepgram agent = Agent( agent_name="my_first_agent", llm=openai.LLM(), tts=cartesia.TTS(), stt=deepgram.STT(), system_instructions="You are a helpful assistant.", ) agent.start()That’s it.Your agent is live and answering phone calls.(Full setup, outbound calling, and advanced examples are in the docs.)Why We Open-Sourced ItWe could’ve kept Siphon proprietary or turned it into a closed SaaS.But we believe voice AI shouldn’t be locked behind massive infrastructure effort.Siphon is:Apache 2.0 licensedProvider-agnosticFully self-hostableNo vendor lock-inUse it commercially, modify it, or build on top of it.What You Can Build📞 Customer support agents📅 Appointment scheduling💼 Sales qualification📊 Surveys & feedback collection🏥 Healthcare intake systemsIf it involves phone calls and conversations, Siphon handles the hard parts.Get Involved⭐ GitHub: https://github.com/blackdwarftech/siphon📖 Docs: https://siphon.blackdwarf.in/docs🐛 Issues & feature requests welcome🤝 PRs encouragedWe’re building Siphon in public and would love community feedback.If you’ve ever thought“I wish building AI calling agents was simpler”— give Siphon a try.Built by BLACKDWARFMission: Democratize complex technologies for developers.

Soraviz is an AI video generation website that allows users to create videos from text prompts quickly and easily online.

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WhisperCode is a voice-to-AI platform for developers. Capture coding ideas with your voice, and the AI transforms them into structured, developer-friendly prompts ready for ChatGPT, Claude, or Copilot. Features IDE extensions for VS Code, Cursor, and Windsurf with automatic codebase context. Two recording modes: Note Mode for longer ideas and Prompt Mode for quick AI prompts. Privacy-first - your prompts and code never leave your machine.

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A lightweight and elegant React full calendar component for the web, easily integrated with shadcn-ui or any Tailwind-based UI library.

Wizstar is an AI video platform that turns product images, text, and URLs into ready-to-publish marketing videos. From AI-generated product ads and avatar presenters to video translation in 70+ languages, Wizstar helps ecommerce brands and creators produce studio-quality content in minutes — no editing skills required.

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Genlook is an AI-powered virtual fitting room that integrates seamlessly into your Shopify store. Give your customers the confidence to purchase by letting them see how clothes look on their own body, increasing conversions and reducing returns

Supsindex evaluates the person behind the startup—not just the story inside the pitch deck. Through three structured assessments and more than 200 indicators, it examines your entrepreneurial knowledge, decision-making, behavior, mindset, strengths, blind spots, and compatibility with the ecosystem you are entering.The result is your Entrepreneurial Passport: a clear, data-backed profile of how prepared you are to build, lead, adapt, and survive as a founder. You receive detailed reports showing where you are strong, where you are exposed, and what needs improvement before an investor discovers those weaknesses for you.A pitch deck explains what you want to build. Supsindex shows whether you appear ready to build it.

A PaaS for deploying apps, managed databases, and S3-compatible storage without Kubernetes or server administration. Auto-deploys from GitHub, GitLab, Bitbucket, or any Docker registry. Runs Laravel, Django, Next.js, Rails, Go. From $9/month.

transcript.im is a transcription workspace for public video links and uploaded audio or video. Paste a YouTube, TikTok, or Instagram link, or upload a media file, and the product creates a timestamped transcript that stays connected to the original recording.Once the transcript is ready, you can clean it, translate it, turn it into structured notes, summarize the key ideas, or build a mind map. Everything starts from the transcript, so you can move from watching to working with the content in one place.

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KoloQR is a free QR code generator with no registration required, unlimited QR codes, no watermark, and free high-resolution downloads. Built for anyone who wants their QR codes to look as good as they work, instead of a plain black and white square, you can generate codes in circle, square, triangle, or hexagon shapes, fully customized with your own colors and a logo placed right in the center. Every code stays 100% scannable no matter which shape or color combination you choose. The tool is designed with real-world business use cases in mind: restaurants creating digital menu codes for tables, freelancers and small businesses adding a scannable link to business cards, brands linking product packaging to more information, and event organizers using codes for invitations and check-ins. Once your QR code is ready, download it instantly as PNG for everyday use or SVG for high resolution printing. There's no signup, no watermark, and no hidden paywall. Just open the site, design your code, and download it.