A typical game of tetravex.

gnome-tetravex

put tiles on a board and match their edges together

GNOME Tetravex is a simple puzzle game which scope is to move the various pieces from one side of the board to the other side, so that the same numbers depicted on the pieces are touching each other.
twin-panel (commander-style) file manager (GTK2)

doublecmd-gtk

twin-panel (commander-style) file manager (GTK2)

Double Commander is a cross platform open source file manager with two panels side by side. It is inspired by Total Commander and features some new ideas.
GTK+ frontend for most used compression formats

xarchiver

GTK+ frontend for most used compression formats

Xarchiver is a lightweight, desktop independent GTK+ frontend for handling 7z, apk, AppImage, arj, bzip, bzip2, bzip3, cab, cb7, cbr, cbt, cbz, chm, compress, cpio, docx, epub, fbz, gzip, iso, jar, jsonlz4, lha, lrzip, lz4, lzip, lzma, lzop, mozlz4, odt, oxt, rar, rpm, rzip, snap, squashfs, tar, xpi, xz, zip, zpaq, zstd and ar files, including the deb format, and self-extracting exe files if they are internally compressed with either 7zip, arj, lha, rar, or zip. Multi-threading tools such as lbzip2, pbzip2, pigz and plzip can be used to replace their respective counterparts.
fast, free, validating XML editor

xmlcopyeditor

fast, free, validating XML editor

XML Copy Editor is an XML editor focusing on editing document markup languages like DITA, DocBook, WordprocessingML. It features DTD/XML Schema/RELAX NG validation, XSLT, XPath, pretty-printing, syntax highlighting, folding, tag completion/locking, and a spelling/style check.
Little shoot-'em-up arcade game for one or two players

dodgindiamond2

Little shoot-'em-up arcade game for one or two players

This aims to be an old school arcade game with low resolution graphics, top-down scrolling action, energy based gameplay, and different weapons with several levels of power.
classic 2D point and click adventure game -- Spanish version

drascula-spanish

classic 2D point and click adventure game -- Spanish version

Drascula: The Vampire Strikes Back is a classic humorous 2D point and click adventure game, first released by Alcachofa Soft S.L. in 1996.