MPhaser

Very, very good phaser for free. Only problem is it crashes Reaper every time I try to remove it from a track or delete a track it's on. [NOTE, this problem has been resolved and is specific to my machine, please see edits below.] I have a feeling it works fine in the more prominent DAWs, I doubt Reaper compatibility is a priority for developers in general. It has some problems in Renoise also, but that's another relatively obscure DAW.

Thanks to the devs. Despite compatibility problems with lesser-known DAWs, it's easily the best free phaser plug I've seen and competes with a number of commercial products.

Edit: just wanted to note, a MeldaProduction rep contacted me about this review a few days after posting it, concerned about the crashes I've experienced. The problem -- which I think may be more or less unique to me because they can't reproduce the issue and I haven't seen other reports of their plugs crashing Reaper -- is being looked into. So they do customer service well also. Thanks to Melda. Now if I only had money...

Edit 2: The problem with MPhaser crashing is resolved -- it was specific to my computer model (ThinkPad T500), specifically its GPU (a terrible old Intel 950). Luckily it has another, much better GPU on board, and once I enabled it, the crashing stopped completely and all Melda plugins I've tried since work flawlessly -- it was my machine, not MPhaser! Huge thanks to Vojtech from MeldaProductions for his interest and communication on the matter.