Xpad is described as 'sticky note application for jotting down things to remember' and is an app in the Office & Productivity category. There are more than 100 alternatives to Xpad for a variety of platforms, including Windows, Android, Linux, Mac and Online / Web-based. The best alternative is Joplin, which is both free and Open Source. Other great apps like Xpad are Standard Notes (Freemium, Open Source), Evernote (Freemium), CherryTree (Free, Open Source) and Zoho Notebook (Free Personal).
NixNote, formerly Nevernote, is an open source client for Evernote . It is written in Java so it will also run on Windows & OS-X, but the primary focus has been to try and get a usable environment for Linux.
WizNote is a Note software, which is especially designed for Internet users and mobile Internet users. WizNote focuses more on notes of rapid collection, management, reading and sharing. WizNote is smaller, more stable, and more suitable for computers, phones and mobile devices.
Stickies is a PC utility written to replace Post-It-style notes left stuck to your monitor. The design goal behind Stickies is that the program is small and simple. Stickies will not mess with your system files, or write to the Registry.