Make Unix Password Hash

mkpasswd --method=SHA-512

Webservices

Email Spam Checker
http://www.mail-tester.com/

Git Hosting
Gitlab - https://about.gitlab.com/ (open source)
Phabricator - http://phabricator.org/ (open source)

Group Chat
Mattermost - http://www.mattermost.org/ (open source)
Slack - http://www.json-generator.com/
HipChat - https://www.hipchat.com/
Rocket - https://rocket.chat/features (open source)

Javascript Editor
jsfiddle https://jsfiddle.net/
Codepen - http://codepen.io/
jsbin - https://jsbin.com/ (open source)

JSON Generator
http://www.json-generator.com/

Online IDE
Cloudnine - https://c9.io/ (open source)

HTML/CS/JS Cleanup
http://www.dirtymarkup.com/

SSL Certificate Checker
https://www.ssllabs.com/ssltest

SSL Check Intermediate Certificate Chain
https://www.sslshopper.com/ssl-checker.html

Fake Email Tester (Send emails to here on dev and view them)
https://mailtrap.io/

Terminal Emulator:
https://hyperterm.org/ (open source)

Note Taking Desktop App
Boostnote - https://b00st.io/ (open source)

Python/Django Storage Backend Notes

Inspired by:
https://django-storages.readthedocs.org/en/latest/backends/amazon-S3.html#storage

Interacting directly with storage backend
from django.conf import settings
from django.core.files.storage import get_storage_class
STORAGE_CLASS_STRING = getattr(settings, "MY_STORAGE_CLASS",  \
        settings.DEFAULT_FILE_STORAGE)
sc = get_storage_class(STORAGE_CLASS_STRING)
s = sc()
s.url("jjj-test/JOE.jpg")
# '/media/jjj-test/JOE.jpg'
s.path("jjj-test/JOE.jpg")
# u'/home/jjasinski/Sites/mysite/htdocs/media/jjj-test/JOE.jpg'
s.exists("jjj-test/JOE.jpg")
# False
f = s.open("jjj-test/JOE.jpg", 'w')
f.write("joe test")
f.close()
s.exists("jjj-test/JOE.jpg")
# True
s.delete("jjj-test/JOE.jpg")
s.exists("jjj-test/JOE.jpg")
# False

Interacting with a Model's storage
from django.core.files.base import ContentFile
obj = MyModel()
obj.photo.save('django_test.txt', ContentFile('content'))
obj.photo.size
obj.photo.read()
obj.delete()