Coalstack

Features

Everything Coalstack does today, in one place.

Tier badges:PROMAX= paid feature

Server Control

Everything you need to run a server day to day. Free on every install.

One-glance dashboard

Start/stop, session uptime, live CPU and memory, and player count in a bento-grid layout. All the metrics that matter, no digging through menus.

Live console with command history

Full server output streamed in real time. Send commands, scroll through history, and filter out RCON noise so you only see what matters.

Player management

Online roster with player heads, session times, and one-click kick or ban. See who's connected and how long they've been on, no commands needed.

Unlimited local servers

Run as many servers as you want locally, each in its own folder with independent settings. Switch between them from the server switcher without restarting the app. (Conduit connections, for remote dashboard access, are capped per tier - see below.)

Notification feed

Joins, leaves, advancements, restarts, errors, and crashes — every event tracked per-server so switching servers shows that server's own history.

Crash detection

Get notified the moment the server stops unexpectedly, with the relevant log excerpt surfaced so you can diagnose the cause immediately.

Setup & Customization

From blank folder to polished server. Most features free, a few PRO-gated.

Setup Wizard

Create a new server from scratch: Vanilla, Paper, Fabric, Forge, or NeoForge. Picks the right Java version, downloads the server jar, and accepts the EULA — all in one flow.

Modrinth marketplace

Browse, search, and install mods, plugins, resource packs, and data packs straight from Modrinth. One click, no manual download-and-drag.

Modrinth modpack installer (PRO)

Search and install full modpacks from Modrinth with automatic version resolution. Compatible with Fabric, Forge, and NeoForge packs.

Server icon & MOTD editor (PRO)

Upload a server icon and edit your MOTD with a live color-coded preview showing exactly how it'll appear in the multiplayer list.

Server Properties editor

Every server.properties key in a searchable table. Add custom keys, edit values in place, and save without ever opening a text editor.

Server Files browser

Full drag-and-drop file manager for the entire server folder. Browse subdirectories, upload files, and manage everything from one panel.

Clone a server

Duplicate an existing server to a new folder. Try a new mod, test a config change, or spin up a copy for a friend — all without touching the original.

Networking & Automation

Get players connected, then set it and forget it. Tiered across PRO and MAX.

uPnP port forwarding

Auto-detect your router's gateway and add or remove port mappings with one click. Friends can join without manual router configuration.

Remote dashboard (Conduit)

Manage your server from coalstack.net: live status, console, player list, and admin roles from any browser, without opening the app. Free includes 1 connected server, PRO 2, MAX 5.

Firewall management

Add and remove Windows Firewall rules for the server port directly from the app. No digging through Windows settings.

Custom domain setup

SRV record builder with copyable values, plus built-in DuckDNS and Cloudflare dynamic DNS so players can connect to a domain instead of an IP.

Live Map viewer

Embedded Dynmap or BlueMap viewer right inside the app. Detects whichever you've installed and opens it in an inline frame.

Automated backups (PRO)

Interval-based scheduled backups with one-click restore. Set it once, never lose a world to a bad update or plugin again.

Automation rules

Trigger actions when a player joins or leaves, on first join, when the server is empty, on a crash, or when the server boots. Run commands, stop the server, or fire a backup.

Discord webhook notifications (PRO)

Send server events — joins, leaves, crashes, restarts — straight to a Discord channel. Configurable per notification type.

Scheduled restarts (PRO)

Keep long-running servers healthy on a repeating timer without you having to remember to do it. Configurable interval in hours.

Scheduled commands (MAX)

Run any console command on a repeating interval. Broadcast a message, save the world, or clear lag entities — hands-free.

Performance & AI Tools

Tune the JVM, debug crashes, and let AI handle the tedious parts. Mixed free, PRO, and MAX.

Live CPU & memory graphs

30-point sparklines for CPU and RAM usage, updating every second so you can spot spikes and trends at a glance instead of squinting at numbers.

RAM allocation

Slider to adjust how much memory the server gets, with a live readout of total system memory so you never overallocate.

View distance & simulation distance

Performance sliders with impact hints — the two biggest levers on per-tick server load, adjustable without opening a config file.

JVM flag presets (MAX)

One-click presets like Aikar's flags for Paper. Optimized startup flags for the garbage collector and JIT compiler that the vanilla launcher skips.

Docker container mode (MAX)

Run Vanilla, Paper, Spigot, or Fabric servers inside a Docker container instead of a plain Java process, using your existing Docker Desktop install. Console, RCON, and stats all work identically.

Mod compatibility checks

Scans installed mods against your server's detected Minecraft version and flags likely incompatibilities before they crash the server.

Auto Debugger

Deterministic scan of logs and crash reports for known error patterns — OutOfMemoryError, port conflicts, mod dependency issues — with plain-English explanations. No AI involved, free for everyone.

AI Log Analyzer (MAX)

Paste a crash log or pick one from your server, and get an AI-powered explanation of what went wrong and how to fix it. Supports Anthropic and OpenRouter.

AI Tool/Config Generator (MAX)

Describe what you want in plain English — a datapack, a plugin scaffold, a server.properties config — and get a generated file back. Supports Anthropic and OpenRouter.

Local Automation API (MAX)

REST API running on localhost for scripting custom automations from outside the app. Trigger actions from your own scripts, dashboards, or tools.

Admin roles & audit log

Invite other Coalstack users as admins with scoped permissions — console, restart, backups, files, whitelist — with a full audit log of every admin action.

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Coalstack now runs on Linux (experimental). Get the build →