Reminder Commander - Reminder manager that reminds you about important events in advance.
Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy
Memo to Me - Online email & SMS reminder service.
HTTP Toolkit - Beautiful, cross-platform & open-source tools to debug, test & build with HTTP(S). One-click setup for browsers, servers, Android, CLI tools, scripts and more.
Date Reminder - Date Reminder reminds you of recurring or nonrecurring events, like birthdays, bills to pay...
Weer - A HTTP protocol debugger with Chrome DevTools frontend interface