Small, sharp open-source dev tools from the HostAtlas team. Free, no signup, no telemetry.
These are the helpers we built for ourselves while running HostAtlas and decided were too useful to keep internal. Single binaries. Sensible defaults. MIT-licensed.
A lightweight SSH & login attack alerter daemon. Watches auth.log /
journald for brute-force attempts and pings you on Slack, Telegram,
Discord, or a webhook before the attacker is in.
Network topology discovery from the inside of a host. No probing, no scanning — just what each host already knows about itself. ASCII for the terminal or interactive single-file HTML.
A prettier docker stats for the terminal. CPU sparklines,
Docker-Compose-aware grouping, keyboard sort and filter. The TUI you
reach for when you SSH'd in to figure out which container is the
problem.
Open port change detector. Scans, diffs, and alerts when a new port opens, a service disappears, or a banner changes. Cron-friendly, multi-channel notifications, JSON-Lines audit trail.
- Single binary — no daemons, no Python venvs, no config-file dance.
- MIT licensed — read the source, fork it, ship it.
- No telemetry, no signup, no calls home — what runs on your machine stays on your machine.
- Self-update —
<tool> --updatepulls the latest signed release. - Cron / systemd-timer friendly — built for sysadmins who already know what they want.
One command, any tool:
curl -fsSL https://tools.hostatlas.app/install.sh | sh -s <tool>Replace <tool> with sentinel, atlasmap, dockertop, or
portwatch. The installer detects your OS + architecture, downloads
the right binary, verifies the SHA-256 checksum, and installs to
/usr/local/bin.
Options:
--user— install to$HOME/.local/bin(no sudo required)--version=X.Y.Z— pin a specific release--dir=<path>— custom install directory
Homebrew (macOS, Linuxbrew):
brew install hostatlas-labs/tap/<tool>Direct downloads:
- Aggregated index: tools.hostatlas.app/tools.json
- Per-tool manifest:
https://tools.hostatlas.app/<tool>/latest.json - Versioned binaries:
https://tools.hostatlas.app/<tool>/<version>/<file>
No catch. These are tools we use ourselves on the fleet that runs HostAtlas and the rest of the Akyros family. Open-sourcing them gives back to the community and helps people find their way to HostAtlas — the SaaS platform where we put everything we learn from running infrastructure professionally.
If you outgrow these tools (continuous monitoring across a fleet, alert correlation, recipe-based remediation), HostAtlas is the next step. If you don't, these tools are yours forever.
- Bug reports → issues on the individual repo
- Pull requests → welcome; please open an issue first
- Anything else → hello@hostatlas.app
HostAtlas Labs is operated by HostAtlas Technologies LLC, an
Akyros Labs brand.
www.hostatlas.app · hello@hostatlas.app