The Slack desktop app that doesn't slow your computer down
The official Slack client is built on Electron and routinely consumes 1 GB of RAM or more. msga is a very lightweight (few megabytes only) native Slack client for Linux, macOS and Windows — sub-second startup, under 60 MB, and 0% CPU when you're not typing.
msga vs. the official Slack desktop app
Native desktop vs. Electron — the numbers side by side.
 MSGA |  Slack official | |
|---|---|---|
| Memory after an hour | ~60 MB | 1 – 2 GB+ |
| CPU load (idle) | ~0% | 1 – 5% |
| Startup time | < 1 second | 3 – 8 seconds |
| UI rendering | Your OS | Chromium browser |
| Bring your own AI | Yes | No |
| Open source | Yes — GPL-3.0 | No |
| Linux (any distro) | ✓ | ✓ |
| macOS (Apple Silicon) | ✓ | ✓ |
| Windows (10+) | ✓ | ✓ |
Supported Slack features
Everything you use every day is already here. Only a couple of extras are still catching up.
| MessagingSend, edit, delete and forward messages in real time | Supported |
| Channels & DMsPublic and private channels, direct messages, workspaces | Supported |
| ThreadsReply to messages without cluttering the channel | Supported |
| SearchFind any message, user or chat across your workspace | Supported |
| File sharingAttach and preview files in conversations | Supported |
| Emoji and Giphy reactionsReact to messages with any emoji, or drop a GIF reaction | Supported |
| App integrationsThird-party tools, bots and slash commands | Partial support |
| HuddlesLive huddle alerts with one-click Join in your browser | Partial support |
Plus features Slack doesn't have
The community asks, we build — often within days. Undo send. One quick switcher that searches every workspace at once. Your own names for group DMs. Moving a stray message into the right thread. A one-click filter down to just the unread conversations. See what landed in the latest releases.
Download msga
Free, open source, and ready to replace Slack on your desktop.
Built in the open
msga is GPL-3.0-licensed and developed publicly on GitHub. If you're a Linux user who wants a faster Slack experience, contributions and bug reports are welcome.
github.com/punarinta/make-slack-great-again