Cossistant

Open-source AI and human support widget framework for React and Next.js apps

Aboutcossistant.com

Cossistant is an open-source framework that adds human and AI customer support to React and Next.js apps. You get programmable actions, custom UI, and code-first workflows, and the AI agent learns from your team. The setup takes a few lines of code with the Next.js package.

Install

pnpm add @cossistant/next

For an agent

Use it when the support widget must match your own design system. Plan for hosting or the paid service, because the AI part needs a backend.

Why it is here. It lets a team own the look of its support chat instead of a third-party embed.

Install command, framework, licence and component list.

Helps you build2

Contacting Support Chat Web App

Notable for

Custom UI
React and Next.js
Open source

Provenance

Verified 2026-10-09. HTTP 200. https://cossistant.com/ (HTTP 200, page fetched 2026-10-09), https://github.com/cossistantcom/cossistant (GitHub API, 729 stars), depo.zip listing https://www.depo.zip/tools/j57enafp6jx7c1zhfqskq78ycs81qyzd

AI Interface Kits