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's development appears to have stalled after 2011.

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

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