There are tons of good editing apps. Darktable is a good one to check out. Rawtherapee might also be a good choice. Gimp is the classic but more photoshop than Lightroom.
Which features of Lightroom are important to you? The editing capabilities? Organizational capabilities? Cloud sync?
There are tons of good editing apps. Darktable is a good one to check out. Rawtherapee might also be a good choice. Gimp is the classic but more photoshop than Lightroom.