zfetch

A high-performance system information fetcher written in Zig

zfetch (⚡) is a lightweight, high-performance system information fetcher inspired by the fastfetch.

The "z" stands for both Zig (the language it's written in) and zap (⚡ lightning-fast). It aims to be extremely fast by avoiding external process calls and using native C APIs or virtual filesystems instead.

Cross-platform: Supports macOS, Linux, and FreeBSD.
Detailed Memory Info:
- On macOS: Provides breakdown of App Memory, Wired Memory, and Compressed Memory (matching Activity Monitor).
- On Linux: Provides Swap usage details.
- On FreeBSD: Uses sysctl for memory and ACPI for battery status.
Hardware Insights: Displays CPU core distribution (Performance vs. Efficiency cores on Apple Silicon), GPU (macOS), and Page Size.
High Performance: Uses sysctl, IOKit, CoreFoundation on macOS, procfs, sysfs on Linux, and sysctl on FreeBSD.

Demo

macOS

                     ..'         jiacai@mario
                 ,xNMM.          ────────────
               .OMMMMo           OS           macOS 26.3 aarch64
               lMM"              Host         Mac14,10
     .;loddo:.  .olloddol;.      Kernel       25.3.0
   cKMMMMMMMMMMNWMMMMMMMMMM0:    Uptime       20 days, 11 hours, 6 mins
 .KMMMMMMMMMMMMMMMMMMMMMMMWd.    Shell        bash
 XMMMMMMMMMMMMMMMMMMMMMMMX.      Terminal     ghostty
;MMMMMMMMMMMMMMMMMMMMMMMM:       Resolution   1728x1117 @ 120Hz
:MMMMMMMMMMMMMMMMMMMMMMMM:       Theme        Light
.MMMMMMMMMMMMMMMMMMMMMMMMX.      CPU          Apple M2 Pro (12 cores: 8P + 4E)
 kMMMMMMMMMMMMMMMMMMMMMMMMWd.    Memory       24.6 GiB / 32.0 GiB (77%) [App: 14.8 GiB, Wired: 3.5 GiB, Compressed: 6.2 GiB]
 'XMMMMMMMMMMMMMMMMMMMMMMMMMMk   Disk         /: 827 GiB / 926 GiB (89%)
  'XMMMMMMMMMMMMMMMMMMMMMMMMK.   Battery      80% [Discharging]
    kMMMMMMMMMMMMMMMMMMMMMMd     Page         16 KiB
     ;KMMMMMMMWXXWMMMMMMMk.      Local IP     10.192.157.86 (en0), 100.80.224.100 (utun0)
       "cooc*"    "*coo'"

Linux

         _nnnn_           jiacai@ThinkCentre-M760t
        dGGGGMMb          ───────────────────────
       @p~qp~~qMb         OS           Ubuntu 24.04.3 LTS x86_64
       M|@||@) M|         Host         LENOVO 12USCTO1WW
       @,----.JM|         Kernel       6.11.0-29-generic
      JS^\__/  qKL        Uptime       2 hours, 52 mins
     dZP        qKRb      Shell        bash
    dZP          qKKb     Terminal     tmux
   fZP            SMMb    Resolution   2560x1440
   HZM            MMMM    Theme        Light
   FqM            MMMM    CPU          13th Gen Intel(R) Core(TM) i7-13700 (24 logical, 16 physical cores)
 __| ".        |\dS"qML   Memory       2.9 GiB / 30.9 GiB (9%) [Swap: 0 MiB / 59.6 GiB]
 |    `.       | `' \Zq   Disk         /: 547 GiB / 878 GiB (62%)
_)      \.___.,|     .'   Battery      No Battery
\____   )MMMMMP|   .'     Page         4 KiB
     `-'       `--'       Local IP     10.192.32.23 (eno1), 172.17.0.1 (docker0)

FreeBSD

 ```                        `      root@freebsd
  ` `.....---.......--.```   -/    ────────────
  +o   .--`         /y:`      +.   OS           FreeBSD 15.0-RELEASE x86_64
   yo`:.            :o      `+-    Host         FreeBSD
    y/               -/`   -o/     Kernel       15.0-RELEASE
   .-                  ::/sy+:.    Uptime       27 mins, 15 secs
   /                     `--  /    Shell        sh
  `:                          :`   Terminal     vt100
  `:                          :`   Resolution   Unknown
   /                          /    Theme        Light
   .-                        -.    CPU          QEMU Virtual CPU version 2.5+ (2 cores)
    --                      -.     Memory       171 MiB / 1.9 GiB (8%)
     `:`                  `:`      Disk         /: 2 GiB / 4 GiB (67%)
       .--             `--.        Battery      No Battery
          .---.....----.           Page         4 KiB
                                   Local IP     10.0.2.15 (vtnet0)

Last modified March 18, 2026: feat(bin): add OS-specific ASCII logos (9763f5f)