Simplenote – an easy-to-use notebook with a basic function set. The software is great to quickly write down the ideas and different thoughts, make a to-do list, plans for the future. Simplenote requires you to specify your mailbox to sync between all of your devices, which allows you to access your notes anywhere. The software uses the tags that are powerful tools in conjunction with the built-in search because it can be used to find the necessary notes and sort them. Simplenote supports a rollback function which displays all changes by dates and enables to return to the previous text version. Also, Simplenote has the ability of teamwork on notes with other users of the service, exchange of notes and posting materials to the internet.