1
Also covers game, game guides, and linux · same kind of open-source project
XXMI provides a modding platform for Genshin Impact, Honkai: Star Rail, Wuthering Waves, and Zenless Zone Zero.
Alternatives
The Best UndertaleModTool Alternatives in 2026
24 alternatives0 free · 24 open source
Looking for something like UndertaleModTool? Here are 24 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 24 are open source.
About UndertaleModToolgithub.com/UnderminersTeam/UndertaleModTool
VisitUndertaleModTool supports modding, decompiling, and unpacking Undertale and other GameMaker games.
Top picks at a glance
First suggestionXXMIXXMI provides a modding platform for Genshin Impact…Another optionCreateYourFrisk (CYF)CreateYourFrisk is a fork of Unitale for creating custom…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | XXMI | — | Yes | Linux, Windows |
| 2 | CreateYourFrisk (CYF) | — | Yes | — |
| 3 | Hmcl | — | Yes | Linux, macOS, Windows |
| 4 | Rim Sort | — | Yes | Linux, Windows |
| 5 | Cubiomes Viewer | — | Yes | Linux, macOS |
| 6 | MCA Selector | — | Yes | macOS, Windows |
| 7 | Genshin Impact FPS Unlocker | — | Yes | Linux |
| 8 | Mtasa Blue | — | Yes | Linux |
| 9 | ArminC-AutoExec | — | Yes | Linux |
| 10 | Bedrock Editor | — | Yes | Windows |
All UndertaleModTool alternatives
2
Also covers game, game guides, and open source · same kind of open-source project
CreateYourFrisk is a fork of Unitale for creating custom Undertale-style battles and encounters.
3
Also covers game, game guides, and linux · same kind of open-source project
Launch Minecraft with HMCL, a cross-platform launcher with a range of configuration options.
4
Also covers game, game guides, and linux · same kind of open-source project
RimSort manages RimWorld mods as an open-source tool, with builds for Linux, macOS, and Windows.
5
Also covers game, game guides, and linux · same kind of open-source project
Find Minecraft seeds and view their map layouts with Cubiomes Viewer, a graphical seed finder.
6
Also covers game, game guides, and open source · same kind of open-source project
MCA Selector lets users select Minecraft Java world chunks and regions for export or deletion.
7
Also covers game, game guides, and linux · same kind of open-source project
Raise Genshin Impact’s frame-rate cap beyond 60 FPS with this unlocker project.
8
Also covers game, game guides, and linux · same kind of open-source project
Multi Theft Auto turns Grand Theft Auto: San Andreas into a networked multiplayer game engine.
9
Also covers game, game guides, and linux · same kind of open-source project
Use a documented Counter-Strike 2 autoexec configuration with ArminC’s settings.
10
Also covers game, game guides, and open source · same kind of open-source project
Bedrock Editor provides in-game multi-block editing tools for modifying Minecraft worlds.
11
Also covers game, game guides, and open source · same kind of open-source project
Launch Minecraft Java Edition on iOS or iPadOS with the Amethyst-iOS project based on PojavLauncher.
12
Also covers game, game guides, and open source · same kind of open-source project
MojoLauncher runs Minecraft Java Edition on Android and is based on PojavLauncher.
13
Also covers game, game guides, and open source · same kind of open-source project
SilentPatch provides fixes for Grand Theft Auto III, Vice City, and San Andreas.
14
Also covers game, game guides, and open source · same kind of open-source project
Launch Minecraft Java Edition on Android or iOS with Amethyst, based on the PojavLauncher project.
15
Also covers game, game guides, and open source · same kind of open-source project
Counter-Strike 2 players can select servers with CS2 Server Picker, a portable Windows application.
16
Also covers game, game guides, and open source · same kind of open-source project
SSBU Calculator estimates knockback for Super Smash Bros. Ultimate based on values entered by the user.
17
Also covers game, game guides, and open source · same kind of open-source project
Roblox users can configure and customize startup through Bloxstrap, an alternative bootstrapper with official download links.
18
Also covers game, game guides, and open source · same kind of open-source project
Browse and extract visual novel resources with GARbro, a visual novel resource browser.
19
Also covers game, game guides, and linux
Generate Minecraft worlds from real-world locations with Arnis, an open-source mapping tool.
20
Also covers game, game guides, and open source · same kind of open-source project
Terraria Map Editor Web lets users open, view, and edit Terraria world files in a browser.
21
Also covers game, game guides, and open source · same kind of open-source project
LunaTranslator translates visual novel text by extracting it from running games, with setup guidance and multiple capture methods.
22
Also covers game, game guides, and open source · same kind of open-source project
Run Minecraft Java Edition on an Android device with Fold Craft Launcher, a community launcher project.
23
Also covers game, game guides, and open source · same kind of open-source project
Explore a web interface for the Adventure text and component framework in this repository.
24
Also covers game, game guides, and open source · same kind of open-source project
Calculate resource and machine requirements for Factorio production goals with this web tool.
No alternatives match this filter.
Alternatives to similar tools
Bedrock Editor24 alternativesTerraria Map Editor Web24 alternativesGenshin Impact FPS Unlocker24 alternativesArminC-AutoExec24 alternativesFoldCraftLauncher24 alternativesAdventure Webui24 alternatives
What is the best alternative to UndertaleModTool?
Based on features, tags and platforms, the closest alternatives to UndertaleModTool are XXMI, CreateYourFrisk (CYF), and Hmcl.
Are there open-source alternatives to UndertaleModTool?
Yes: XXMI, CreateYourFrisk (CYF), Hmcl, and Rim Sort.
Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative