Free lossless compression software for windows

Onda Lossless Audio Compressor is a Java program that compresses 16-bit and 24-bit WAVE and AIFF audio files using the Onda lossless audio compression (LAC) algorithm.
The Onda Lossless Audio Compressor algorithm doesnt perform as well as some other open-source LAC algorithms in terms of either speed or compression ratio; its virtue, if it can be said to have one, is that it is easy to understand and to implement, involving no mathematics beyond a bit of arithmetic.
The motivation for publishing the Onda Lossless Audio Compressor algorithm is that there may be circumstances in which a mediocre but simple LAC algorithm thats easy to implement is preferable to a good but complex algorithm.
There is a diminishing return on the complexity of LAC algorithms; each extra percentage point of compression becomes increasingly difficult to achieve.
The Onda Lossless Audio Compressor algorithm is content with the easy pickings: it gives up the struggle for extra compression when the going gets tough, with the expectation that its less-than-stellar performance will be sufficient for some purposes.
Main features:
- It can compress 16-bit and 24-bit AIFF and WAVE audio files, and can validate and expand files that it has compressed.
- It can be used as a command-line (console) application or with a graphical user interface (GUI).
- It can operate on single files or on all the files in a directory, with optional recursion. Input files and directories can be specified directly or as a list of pathnames in a text file.
- When it is run as a GUI application, input files and directories can be specified by drag-and-drop on systems that support it.
- It can preserve the ancillary chunks of AIFF and WAVE files (eg, the "bext" chunk used in BWF files), using a filter to specify the chunks that should be included in or excluded from a compressed file.

PhotoGallery: Batch Resizing & Compression 1 offers you a convenient software which is designed to resize images one at a time or multiple files with a single click. Resize JPEG images to make them smaller, send them faster and conserve valuable space on your Web site.

Alparysoft Lossless Video Codec is for encoding (compression) and
decoding (decompression) of video:
Main features:
- Without any mathematical losses (i.e. source and destination video are absolutely identical after encoding/decoding process), the compression ratio is twice - 5 times.
- Without any visual losses, i.e. human eye wont be able to see any difference between source and destination video, the compression ratio is 5-15 times.

Lossless compressor for multichannel 8,16 and 24 bits audio data. TTA Lossless Audio Codec is a free, simple, realtime lossless audio compressor that is also based on adaptive prognostic filters and has compared favorably to a majority of its popular open-source peers.
The codec was built to offer adequate compression levels while maintaining high operation speeds.
The TTA lossless audio codec performs lossless compression on multichannel 8, 16 and 24-bit data of WAV audio files. The term "lossless" refers to the fact that such compression results in literally no data or quality loss; when decompressed, the audio file data are bit-identical to those of their originals.
Compression ratios achieved by the TTA codec vary, depending on music type, but range from 30% - 70% of the original. The TTA lossless compressed audio format supports both ID3v1 and ID3v2 information tags.
The TTA lossless audio codec allows for the storage of up to 20 audio CDs worth of music on a single DVD-R, retaining the original CD quality audio, plus detailed information in the popular ID3 tag format.
Being lossless means that no data/quality is lost in the compression - when uncompressed, the data will be identical to the original.