The AI workspace that coordinates humans and agents. Every decision, task, and commitment is extracted, attributed, and searchable — building team knowledge that compounds over time.
Every message you send in Slack flows through Salesforce. Every Teams prompt feeds Microsoft's AI. You're paying them to learn your business. There's a better way.
Download your entire workspace as a single file. Messages, tasks, documents, files, Brain memory — everything. Import it on any Nexus instance. Your workspace is a file, not a subscription. One-click kill switch to permanently erase everything — instant, irreversible.
A built-in panel shows every outbound connection your instance makes. Which server, when, why. Self-hosted Nexus contacts exactly one external service: the AI provider you chose. Verify it yourself.
Every AI call tracked with exact token counts and costs. See what you spend per model, per action, per day. Slack AI charges $10/user/month — Nexus averages $0.10. Full cost dashboard built in.
The Brain follows every conversation and saves what matters — who made which decision, where the budget went, what was promised and by when.
Your team's context stays intact, searchable, and attributed — even when people forget. The Brain coordinates agents and humans, and holds everyone accountable.
Most teams use AI in private — one person prompts ChatGPT, pastes the output, and nobody knows what was asked or why. Nexus makes AI a shared, transparent experience.
Every AI interaction happens in a channel. The team sees what was asked, which model answered, and what tools were used. No black boxes.
Brain accumulates knowledge from every conversation, decision, and document. When anyone asks a question, Brain draws on the whole team's context — not just one person's chat history.
AI responses are attributed, timestamped, and searchable. Months later, you can trace any AI-generated insight back to the original question and the context it was given.
Schedule any agent to run on a calendar — daily digests, price alerts, research reports, task follow-ups. Set it and forget it.
Schedule agents the same way you schedule meetings. Pick a time, pick an agent, write the prompt. One-shot or recurring — daily, weekly, cron expressions.
Override the model per job. Use a fast model for price checks, a reasoning model for research reports. 200+ models via OpenRouter.
The server fires agents on schedule whether anyone is connected or not. Wake up to a digest, a price report, or a research summary already waiting.
Chat, tasks, events, AI agents, and a knowledge base that builds itself — all in one place.
Channels, DMs, reply threads, emoji reactions, @mentions with autocomplete, desktop notifications, drag & drop file sharing, and markdown with syntax highlighting.
Create tasks from conversations with a click. Assign to humans or agents, set deadlines, track progress. Brain automatically follows up when deadlines approach.
Schedule events, coordinate across team members and agents. Track who committed to what and when — the Brain holds everyone accountable.
8 built-in agents: writer, coder, analyst, planner, researcher, and more. Build custom agents with a prompt and give each one skills and tools. Browse the agent library for ready-made templates.
Extend agents with Model Context Protocol servers. Web search, calendars, databases, APIs — if there's an MCP server for it, Nexus can use it.
9 roles from guest to super admin, 22 granular permissions, and an org chart. Control exactly who sees what, who can invite, and who manages agents.
Every plan includes Brain AI, unlimited messages, and all features. Upgrade for more members, or self-host for total control.
Get started instantly. No credit card, no catch.
Create WorkspaceEverything in Free, plus unlimited members and priority support.
Download the binary, run it on your hardware. Full control, full freedom.
Download BinaryThe features you need without the vendor lock-in you don't.
| Nexus | Slack | Teams | Mattermost | |
|---|---|---|---|---|
| Self-hosted | ✓ Single binary | ✕ | ✕ | Complex setup |
| AI with memory | ✓ Decisions, commitments, policies | Bolt-on plugins | Copilot (cloud only) | Third-party |
| Custom agents | ✓ Markdown-defined | ✕ | Limited | ✕ |
| Reply threads | ✓ Built-in | ✓ | ✓ | ✓ |
| Emoji reactions | ✓ Built-in | ✓ | ✓ | ✓ |
| Desktop notifications | ✓ Built-in | ✓ | ✓ | ✓ |
| Data sovereignty | ✓ Your disk | AWS / Salesforce | Azure | Your server |
| Model choice | ✓ Any (local or cloud) | N/A | GPT-4 only | N/A |
| AI cost | ✓ ~$0.10/user/mo (transparent) | $10/user/mo (Slack AI) | $30/user/mo (Copilot) | N/A |
| Knowledge base | ✓ Auto-extracting | ✕ | SharePoint | ✕ |
| Signup required | ✓ No | Yes | Yes | Yes |
| Portable export | ✓ Single .nexus file | Lossy CSV | Compliance only | Admin export |
| Network transparency | ✓ Built-in log | ✕ | ✕ | ✕ |
| Instant data deletion | ✓ One button | 30-day request | Legal hold | Manual |
| AI self-reflection | ✓ Built-in | ✕ | ✕ | ✕ |
| Cost | ✓ Free forever | $8.75/user/mo | $4/user/mo | Freemium |
Pick the path that fits your workflow. All five run the same Nexus.
Name your workspace, pick a display name, done. No install, no config.
Open Nexus Cloud ~10 secondsOne-line installer for Linux servers. Downloads the latest release binary.
Single command with Docker Compose. Add SSL with the production config.
Deploy to Fly.io's global edge network. Your own private instance with persistent volume.
Clone the repo, build, run. Requires Go 1.25+ and Node 22+.
Start on the cloud in 10 seconds or self-host forever. No credit card, no catch.