DeePsea

DeePsea is a Doom level editor and WAD resource manager. It has full support for Doom, Doom II, Heretic, Hexen, Strife and any source port via custom configuration files. 3D texture alignment uses a variant of the Risen3D GL port, R3Dedit. Since R3Dedit is based on Risen3D, it is able to provide a view of a level with normal skies, as well as optionally showing the placement of all sprites.

It was developed by Jack Vermeulen of SB Software, and was originally a shareware application before being made free in 2018. For the unregistered version, there was no time limit, but the maximum size of levels a user can create was limited to 800 linedefs or 1200 sidedefs. DeePsea stalled in development for slightly over 11 years until January 25, 2023, with the release of version 13.0.5.

DeePsea features
All PWAD tools are unlimited in the shareware version.
 * Map editor with 3D texture alignment (supports both line drawing or sector drawing)
 * Level error checking
 * Lump management tools
 * Create PWADS and IWADS
 * Import/Merge/Export any file (including WADS) with duplicate error checking
 * Direct picture format image editor, with support for tall patches
 * Texture editor
 * Palette editor
 * Colormap editor
 * Script editor and compiler
 * Sound and music playback
 * Automatic regular or GL node generation using DeePBSP
 * Automatic list of all textures used in a level or PWAD
 * Open dialog browser shows the contents of WADS without having to open them
 * Show detailed level statistics
 * A 3D editing interface called R3DeeP as of version 13.0.5

In addition, pressing the F7 key allows the user to access almost every feature within the program.