Cleanbox will aggregate all of your subscriptions and let you cancel them in one click. It's free and it works with Gmail.

http://focuslist.co/cleanbox/

Encode your images into BASE64. Just hit drag and drop your image or click to upload then grab the BASE64 or the img tag with the code already in there!

http://bse64.com/

Introbar - Welcome and entice visitors from specific sources with an IntroBar.

http://introbar.com/

Access all your coding documentation in one place, always up-to-date. Includes snippet library triggerable via abbreviations.

https://kapeli.com/dash

Cross-platform notebook for your code snippets. Supports highlighting, side by side notes (eg, HTML vs Javascript) and markdown.

https://b00st.io/