I’ve put aside some time to work on my flagship project “OneClick”. I started from scratch completely and the new version is insanely cool and powerful with features like detection of plugins, themes, confirmation and auto activate, among many others. I will be releasing it hopefully next week, and will have support for the futuristic wp-filesystem(hopefully)
is being developed and tested for good support for file writing and deleting, and has a SafeWrite mode which allows users to delete their files without any chmodding.

Good deal Anirudh!
Glad you’re still working on it and I’m looking forward to the new release. Take your time though, WordPress 2.5 has been pushed back a week already and it would be well worth waiting until the final is out since bits of WP code are changing every day/hour/minute (I know, I’m running “Bleeding Edge” WP 2.5 trunk on my main blog now). Just to let you know though, besides the frowney face on “new release available” (there’s not) OneClick has been working right along with no problems with the exception it never could handle having the actual plugin folder being a sub-folder located inside another folder (the plugin author’s fault actually). I find it funny that 2.5’s attempted automatic plugin upgrade feature has never worked for me when the last version of OneClick has worked flawlessly all along. Not bad at all.
Keep up the fine work.
You need to change the menu code to be compatible with Wordpress 2.5. Perhaps this will work for you (it work for my install of WP 2.5) :
add_options_page('OneClick Installer','OneClick Installer', 10, '', 'RenderPage');