Editing Tools (section)

== Game File & Resource Tools ==
;[https://github.com/might-and-magic/mmarch MMArch] by tomchen
* ''Command line tool to handle (extract, replace, compare resources and more) Heroes of Might and Magic 3 and Might and Magic 6, 7, 8 resource archive files (e.g. lod files) for Windows, Linux and macOS.''
* Tool is currently maintained as of 2026.

;[https://github.com/suurjaak/h3sed H3SED] by suurjaak
* ''h3sed is a Heroes3 Savegame Editor, written in Python. It opens savegame files from Heroes of Might and Magic III, allowing to see an overview of all heroes, and edit any and all hero attributes. Supports Restoration of Erathia, Armageddon's Blade, Shadow of Death, Heroes Chronicles, and Horn of the Abyss.''
* Tool is currently maintained as of 2026.

;[https://github.com/Cs-Ar-Os/Tools CsArOs' Tools] by [[user:Csaros|CsArOs]]
* Various tools for reading Heroes 3 files or editing them. 
* Tool was last updated in 2025.

;[https://github.com/sake12/HotA-editor HotA Editor] by sake12
* An app to edit the HotA.dat file.
* Tool was last updated in 2024 and is compatible with {{hota}} version 1.7.0.

;[https://github.com/cysun/Heroes3Editor Heroes 3 Savegame Editor] by cysun
* ''Open a savegame file (.CGM for Campaign game save or .GM1 for Single Scenario game save), search for a hero by name. You may search the same hero multiple times to locate multiple instances of the hero in the same savegame file. ''
* Tool was last updated and archived in 2023.

;[https://github.com/neunato/homm3-unpacker HOMM 3 Unpacker] by neunato
* Parse file formats used by Heroes of Might and Magic III in node.js or modern browsers. Online demo is also available [https://neunato.github.io/homm3-unpacker here].
* Tool was last updated in 2022.

;[https://github.com/andryunin/h3m H3M Parser] by andryunin
* Simple parser for Heroes of Might and Magic III map format. Currently can extract info about map name, description, difficulty, size, subterranean presence and minimal required game version (to be continued, see TODO).
* Tool was last updated in 2021.

;[https://github.com/brandshub/Heroes3ResourceManager Heroes 3 Resource Manager] by brandshub
* Heroes Of Might And Magic III Resource Viewer/Editor.
* Tool was last updated in 2020.

;[https://github.com/Radomiej/homm3map-to-json HOMM3 Map to JSON] by Radomiej
* .h3m to .json converter.
* Tool was last updated in 2020.

;[https://github.com/HeroesProjects/h3mapper H3Mapper] by kkozmic
* Tool to manipulate map and campaign files from Heroes of Might and Magic 3.
* Tool was last updated in 2019.

;[https://github.com/chyvonomys/h3m H3M Parser] by chyvonomys
* Experimental just-for-fun parser for Heroes of Might and Magic III map files (*.h3m) written in rust with nom parser combinators. Supports RoE/AB/SoD formats. Partial save support, very basic ASCII map layout preview.
* Tool was last updated in 2018.

;[https://github.com/minexew/h3explorer H3 Explorer] by minexew
* Content browser for Heroes of Might and Magic III.
* Tool was last updated in 2018.

;[https://github.com/lekzd/h3m-map-convertor H3M Map Converter] by lekzd and potmdehex
* Converts .h3m map files to .json files.
* Tool was last updated in 2018.

;[https://github.com/drevoborod/homm3map_locator HOMM 3 Map Locator] by drevoborod
* Utility for filtering Heroes of might and Magic 3 map files basing on map's size.
* Tool was last updated in 2017.

;[https://github.com/Dergash/h3m-sharp H3M Sharp] by Dergash
* C# implementation of .h3m parser.
* Tool was last updated in 2016 and was archived in 2019.

;[https://github.com/Dergash/h3m-sorter H3M Sorter] by Dergash
* Instrument for managing large archives of Heroes of Might and Magic 3 maps.
* Tool was last updated in 2016.

;[https://github.com/potmdehex/homm3tools HOMM 3 Tools] by potmdehex
* Tools and libraries for Heroes of Might and Magic III.
* Tools were last updated in 2016.

;[https://github.com/josch/lodextract LOD Extract] by josch 
* This is a set of scripts which shows how to unpack all bitmaps and animations of Heroes of Might and Magic 3 into PNG images and then back into the formats understood by VCMI.
* Tool was last updated in 2014.

;[https://github.com/w4kfu/read_lod Read LOD] by w4kfu
* Read .lod files from Heroes 3.
* Tool was last updated in 2011.