# System Requirements

## Windows

### Operating Systems (32-bit and 64-bit)

- Windows 7 SP1 with KB4474419 SHA-2 code signing support added
- Windows 8
- Windows 8.1
- Windows 10
- Windows 11

Please note that SeaMonkey 2.49.5 was the last release to run on Windows XP and Vista.

### Minimum supported Hardware

SeaMonkey on Windows needs a CPU supporting the SSE2 instruction set.

- Intel Core 2 Duo 1.8GHz or greater
- AMD Phenom 1.8GHz or greater
- 2 GB RAM for the 32-bit version
- 3 GB RAM for the 64-bit version
- 500 MB of free hard drive space

## macOS

### Operating Systems

- Mac OS X 10.11 or higher

Please note that SeaMonkey 2.53.14 was the last release to run on OS X 10.9 and 10.10. Because of a build error SeaMonkey 2.53.15 does not run on OS X 10.11.

### Minimum supported Hardware

- Any Apple Mac running mac OS X 10.11 or higher
- 3 GB RAM
- 500 MB of free hard drive space

## Linux

### Software Requirements

Please note that Linux distributors may provide packages for your distribution which have different requirements.

- The following library versions (or compatible) are required:
  - GTK+ 3.22 or higher
  - GLibc 2.17 or higher
  - Pango 1.22 or higher
  - X.Org 1.20 or higher
  - libstdc++ 4.8.5 or higher

### Minimum supported Hardware

- Intel Core 2 Duo 1.8GHz or greater
- AMD Phenom 1.8GHz or greater
- 2 GB RAM for the 32-bit version
- 3 GB RAM for the 64-bit version
- 500 MB of free hard drive space