Surreal ToDo is described as 'is more than just a web based list management application. Its more like your online notebook. Surreal ToDo uses PHP, MySQL and jQuery with AJAX for a web 2.0 experience that feels like an application running on your desktop' and is an website in the Office & Productivity category. There are more than 25 alternatives to Surreal ToDo, not only websites but also apps for a variety of platforms, including Windows, Android, iPhone and Mac. The best alternative is Microsoft OneNote, which is free. Other great sites and apps similar to Surreal ToDo are Evernote (Freemium), Zoho Notebook (Free Personal), Remember The Milk (Freemium) and Notezilla (Paid).
Take your tasks anywhere with this feature-packed application. See tasks located nearby, add and complete tasks on the go, organize upcoming tasks, and sync it all seamlessly with Remember The Milk. Desktop app available for Pro users. Very good integration in GMail!
Colorful & powerful sticky notes app for Windows & Phones. Set reminder alarms, attach them to any website or document, organize them using folders/tags, sync sticky notes between devices & send notes across LAN or to any contact across the globe.
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.
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.