Apps to Photographic filters

PixelFed is an open-source, federated photo-sharing platform designed as a privacy-focused alternative to commercial social media. It allows users to share photos and short stories within a decentralized network, emphasizing user control and the absence of algorithmic manipulation.

Open Camera is a comprehensive and entirely free camera application designed for Android devices. It offers a wealth of professional-grade features and granular control over your photography and videography, making it a powerful tool for both casual users and enthusiasts.

UFRaw (Unidentified Flying Raw) is a powerful and flexible open-source application designed for processing and manipulating raw image files from digital cameras. It provides a comprehensive suite of tools for non-destructive editing, batch processing, and conversion.

Photivo is a free and open-source photo processor designed for advanced users. It supports a wide range of RAW and bitmap file formats, offering sophisticated tools for image processing, editing, and conversion.