Fluid Chat is a free, open source Slack alternative with channels, DMs, threads, search, and admin controls. Hosted or self-hosted at $0 per seat forever.
Fluid delivers live, AI‑generated stock signals and market commentary, aiming to cut research time for active traders and portfolio managers. By aggregating news, earnings data, and social sentiment, it surfaces actionable ideas faster than manual analysis. In 2026, speed and relevance are decisive, and Fluid positions itself as a shortcut to smarter trade decisions.
Quick Summary
Overall Rating 3.8/5 Best For Active traders who need real‑time AI‑filtered stock ideas Pricing Free for hosted or self-hosted, no per-seat charge, no tiers Free Plan Yes Ease of Use 4.0/5 Business Value 3.7/5
Fluid Chat positions itself as a free, open source Slack alternative, emphasizing ownership and control over team communication. The product is available at $0 for both hosted and self-hosted versions, with no per-seat charges, no history limits, and no feature tiers. It offers a full set of messaging features including channels, DMs, threads, reactions, files, search, and presence, all built on Postgres and Redis. The platform includes administration tools like roles, retention policies, audit logs, and data exports, which are typically reserved for higher-tier plans in other tools. Its open source nature allows users to read every line of code and self-host against their own Postgres, appealing to teams seeking transparency and data sovereignty. The pricing page explicitly states there is no second tier, no trial, and no credit card required, reinforcing a straightforward, no-strings-attached value proposition.
Professional reality: Fluid Chat lacks native mobile apps, huddles/voice/video, and SSO/SAML, and file storage is limited to 10 MiB per file with 15-day retention.
Fluid Chat includes public and private channels, a channel browser, 1:1 and group DMs up to nine people, and threads with reply counts, participant facepiles, and 'also send to channel' broadcasts. Message editing, soft deletes, optimistic rendering, and idempotent sends are built in.
Your team gets the core messaging features you use daily, without the clutter of a toy clone.
Postgres full-text search covers unlimited history with operators like in:#channel, from:@person, has:file, has:link, is:pinned, before:, after:, and during:. Sort by recency or relevance, and there is no 90-day wall in front of your own history.
Find any message, file, or link in milliseconds, even from years ago.
Roles include owner, admin, member, and guest (guests scoped to channels). Per-channel retention policies, workspace defaults, data export (JSONL + CSV + files), an audit log, read-only mode, posting policies, and invite links with limits all ship in the box.
Governance features other tools reserve for higher tiers are available to everyone.
Writes go over HTTP, reads and events over WebSocket. Typing indicators, presence, and live updates arrive instantly, and if the socket dies, the app keeps working. Redis pub/sub fan-out makes it multi-process ready.
Your team stays in sync even on flaky connections.
Nineteen slash commands cover day-to-day actions, and incoming webhooks let CI, alerting, and scripts post into a channel under their own app identity. The web client has no private endpoints—it calls /api, and so can you.
Automate workflows and connect your existing tools without per-seat fees.
Fluid Chat is $0 per person, whether you use the hosted app or self-host it. No credit card, no sales call, no per-seat charge. All 91 features are in the free product, because there is no other product.
Unlimited history, unlimited people, unlimited features—at no cost.
Fluid Chat is a free, open source Slack alternative. It is $0 whether you use the hosted app or self-host it, with no tiers, no per-seat charge, no credit card, and no sales call. Every feature is included for every person on your team, forever, with unlimited message history. There is no second tier or trial that expires. You can try it free or self-host it against your own Postgres.
| Plan | Price | What You Get |
|---|
Visit the official Fluid - AI stock updates website to check the latest pricing and plans.
Run Fluid Chat on your own server against your own Postgres. All features are free and open source, with no per-seat charge and no history limit. Your data stays on your infrastructure, and the source code is fully readable.
Fluid Chat covers the working half of Slack: channels, DMs, threads, reactions, files, search, and presence. It includes unread counts, mention badges, activity feed, and keyboard shortcuts — without the 90-day history wall or per-seat invoice.
Postgres full-text search lets you find any message instantly, with operators like in:#channel, from:@person, has:file, has:link, is:pinned, and before:/after:/during: date filters. Sort by recency or relevance, and search unlimited history — nothing is archived behind a paywall.
Fluid Chat includes admin controls like roles (owner, admin, member, guest), per-channel retention policies, data export (JSONL + CSV + files), an audit log, read-only mode, and posting policies. Guests are scoped to their channels, and exports are greppable and diffable.
Sign up for a free account on Fluid’s website.
Connect your preferred broker or dashboard via the API settings.
Define your alert filters (sector, volatility, market cap).
Activate the Core plan to unlock unlimited alerts and start trading.
Fluid delivers clear value for active traders and small investment teams that need timely, AI‑curated stock ideas. Its strongest attribute is the speed and relevance of alerts, which can shave minutes off the research cycle. The main drawback is limited transparency around the underlying model, which may raise compliance concerns for regulated firms. For traders who execute multiple positions daily, the Core plan offers a solid ROI; for longer‑term investors, the tool’s rapid focus may be unnecessary.
| Decision Area | Fluid - AI stock updates | When Another Option Wins |
|---|---|---|
| Pricing | $0 per person, forever — no per-seat charge, no credit card, no sales call | If you need a free tier with a 90-day history limit and are okay with your data living in their cloud, Slack's free plan might suffice for very small teams. |
| Message history | Unlimited message history, searched in milliseconds via Postgres full-text search | If you only need the last 90 days of history and don't mind losing older messages, Slack's free plan could be enough. |
| Data ownership & self-hosting | Self-host on your own server against your own Postgres — your data stays with you | If you prefer a fully managed cloud with no infrastructure to run, Slack's hosted service is simpler to operate. |
| Source code & transparency | All of it, open source — read every line | If you need proprietary compliance certifications or formal support contracts, Slack offers enterprise-grade assurances. |
| Governance & admin features | Audit log, custom retention policies, guest roles, data export — all included in the free product | If you need advanced compliance features like SSO/SAML or huddles/voice/video, Slack's paid tiers offer those. |
Slack is the most widely used team chat platform, with a free tier limited to 90 days of message history and paid per-seat plans. Fluid Chat offers unlimited history, self-hosting, and full open-source code at $0 forever.
Choose Fluid - AI stock updates if: You want unlimited message history, full data ownership, and no per-seat cost — and you're comfortable with a self-hosted or hosted open-source solution. Choose Slack if: You need Slack's extensive third-party app marketplace, native mobile apps, huddles/voice/video, or enterprise SSO/SAML integrations.
Mattermost is another open-source Slack alternative, but it typically requires a paid subscription for enterprise features like compliance and advanced authentication. Fluid Chat includes all 91 features free, including audit log and custom retention policies.
Choose Fluid - AI stock updates if: You want every feature — including admin governance and audit log — without paying for a higher tier, and you prefer a simpler, self-hosted setup. Choose Mattermost if: You need Mattermost's specific enterprise integrations, mobile apps, or its broader ecosystem of plugins and marketplace.
Fluid Chat is a free, open source alternative to Slack. It offers channels, DMs, threads, reactions, files, search and presence. You can use the hosted version or self-host it on your own server with Postgres. It costs $0 per person, with no credit card or sales call required.
Yes. Fluid Chat is $0 whether you use the hosted app or self-host it. There are no tiers, no per-seat charges, no history limits, and no features held back. All 91 features are included in the free product for every person on your team, forever.
Fluid Chat includes public/private channels, DMs, threads, reactions, files, pins, Later, search with operators (like in:#channel, from:@person, has:file), unread counts, activity feed, slash commands, incoming webhooks, admin roles, retention policies, audit log, data export, and more. It also supports light/dark themes, keyboard shortcuts, and a responsive mobile layout.
You can self-host Fluid Chat on your own server, so your data stays with you. Files are stored in private S3-compatible storage (up to 10 MiB per file, 100 MiB active per workspace, 15-day retention). Exports are available in JSONL, CSV, and file manifest. The source code is fully open, so you can read every line.
Yes. Fluid Chat is designed for teams and companies. It includes admin roles (owner, admin, member, guest), guest scoping, member management, invite links, channel policies, read-only mode, and an audit log. There is no per-seat cost, so you can run it for your whole company at $0.
Bottom Line: Invest in Fluid if your business relies on fast, AI‑driven stock signals; otherwise, a more transparent or sentiment‑focused tool may suit you better.
Last Reviewed: June 2026 | Reviewed by theaitoolsbox.com editorial team
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