BSAopt

BSAopt is a tool which manages and recompresses BSA-files. It has been forked off NIFopt and both programm share the same underlying technology regarding BSAs. Both programs treat BSAs exactly like directories, files inside can be adressed easily. It can deduplicate files in BSAs as well as compress files a rough 5% better, WAVs 20% better. Requires Vista (and up). Partially multi-threaded, and for 32bit and 64bit Windows. The documentation and newest version can be found here: BSAopt The bugtracker is here: github This is what it can do to the Oblivion-Archives: DLCBattlehornCastle.bsa 9162178 -> 7182676 (112 duplicates) 78. 4% DLCFrostcrag.bsa 17212790 -> 15626142 (0 duplicates) 90. 8% DLCHorseArmor.bsa 3943712 -> 3813871 (0 duplicates) 96. 7% DLCOrrery.bsa 16352207 -> 15724071 (0 duplicates) 96. 2% DLCThievesDen.bsa 2125267 -> 1666037 (14 duplicates) 78. 4% DLCVileLair.bsa 4081041 -> 3637567 (2 duplicates) 89. 1% DLCShiveringIsles - Meshes.bsa 122339871 -> 117011207 (17 duplicates) 95. 6% DLCShiveringIsles - Sounds.bsa 91690787 -> 72835304 (4 duplicates) 79. 4% DLCShiveringIsles - Textures.bsa 312806750 -> 302056536 (21 duplicates) 96. 6% DLCShiveringIsles - Voices.bsa 442214079 -> 420490299 (7 duplicates) 95. 1% Oblivion - Meshes.bsa 691562829 -> 674884632 (98 duplicates) 97. 6% Oblivion - Misc.bsa 6183584 -> 774905 (2 duplicates) 12. 5% Oblivion - Sounds.bsa 330432865 -> 264409938 (39 duplicates) 80. 0% Oblivion - Textures - Compressed.bsa 1217809056 -> 1137066576 (957 duplicates) 93. 4% Oblivion - Voices1.bsa 668060973 -> 633262181 (30 duplicates) 94. 8% Oblivion - Voices2.bsa 1066830808 -> 1008964233 (128 duplicates) 94. 6% Version history: 1. 0 - initial release 1. 1 - bugfixes: individual checkboxes in the list didn\'t apply, fixed folders with similar names got mixed-up contents, fixed BSAs could be copied into other BSAs, fixed root-dir didn\'t appear in the tree but copied over, fixed the overlay of input- and output was case-sensitive, fixed - added features: pre-deselect .esp, .psd, .pdf when destination is a BSA if the menu-entry \"Unselect inappropriate\" is configured 1. 2 - bugfixes: progress-bar got a mess after a few iterations, fixed adding to existing BSAs cleared the old file\'s compression flag, fixed - added features: improved failure-handling, more and clearer messages 1. 3 - optimizations: startup is immediate and initial scan is faster checking/unchecking a branch is faster in/out bytes in the progress-dialog - added features: logfiles (if you want them) 1. 4 - bugfixes: empty file hashes were trash, fixed \"Skip Hashes\" option didn\'t apply on s