Open Source Alternatives to Phone.do

Open-source library for building hyper-realistic voice agents and conversational AI applications.

Open-source conversational AI platform for building custom chatbots and virtual assistants.

Open-source AI models for voice synthesis, translation, and TTS.

Open-source scheduling infrastructure for individuals, businesses, and developers.

Parlant is an open-source conversational AI engine dedicated to solving the Human/AI alignment problem by enabling Large Language Models to reliably perform as desired and prevent hallucinations.

Open-source backend-as-a-service platform for building scalable applications.

Open-core company building tools for modern backend engineers to ship faster and better.

Industry-standard API simulation and mocking platform for reliable software development and testing.

Open-source notification infrastructure for developers, empowering the community.

Ark Infotech offers Cybersecurity, AI/ML, Data Analytics, and IT consulting services, including the Slauth.io IAM Policy Copilot.

Platform for developers building stateful reactive applications on the modern cloud with object store native databases.

Open-source, privacy-focused voice assistant and AI platform.

Open-source Node.js backend development platform for accelerating application development.

Company

Best free & open source AI personal assistant.

A non-profit AI research lab focused on open science and developing advanced multimodal and voice AI models.

ScyllaDB is a high-performance, low-latency NoSQL database for data-intensive applications, designed to scale with modern infrastructure.