Software · Development

QtSpim

A self-contained simulator that runs MIPS32 programs.

Completely free
Linux
Open source

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Geographic availability: No geographic restriction found in our sources; availability is not checked country by country.

Technical details

Pricing: Completely freeconfirmed by Flathub
License: BSD-3-Clause — Open source (permissive)confirmed by Flathub
Open source: Yes
Commercial use: Yesconfirmed by Official plan pages (pricing, licence, terms), Flathub
Account required: not documented
Credit card required: Noconfirmed by Flathub
Watermark: Not applicable
Ads: not documented
Platforms: LinuxEstablished by Linux: Flathub
Publisher: James Larus
Latest version: 9.1.23 (6 December 2021)
Latest activity: 15 February 2026
Source code: sourceforge.net/p/spimsimulator/code

Overview

Features described in its Flathub listing: debugging.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

Excerpts that establish this information

“QtSpim also provides a simple debugger and minimal set of operating system services.” — Flathub, 10 November 2026

At a glance

All of QtSpim is free: no feature is locked behind a paid plan, and its code is open.

Its licence (BSD-3-Clause) is a permissive open source licence: use, modification and redistribution are allowed, including in commercial projects.

Strengths

Open source code
Commercial use allowed

About

QtSpim is a self-contained simulator that runs MIPS32 programs. It reads and executes assembly language programs written for this processor. QtSpim also provides a simple debugger and minimal set of operating system services.

Description from Flathub — AppStream (Flathub)

Sources and checks

Facts collected from Official plan pages (pricing, licence, terms) (commercial use) — 10 November 2026
Facts collected from Flathub (credit card, source code, publisher, licence, free status, platforms, commercial use, version) — 8 November 2026
Last technical check: 8 November 2026
Description from Flathub — AppStream (Flathub)

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