Tegaki E is described as 'All entries and comments are hand-drawn/written, with a mouse or tablet'. There are four alternatives to Tegaki E, not only websites but also apps for . The best alternative is PaintBerri, which is free. Other great sites and apps similar to Tegaki E are okekai (Free, Open Source), Drooodle (Free) and slimanimation (Freemium).
Oekaki.nl (previously named Senile.nl) is and has been the most fun Dutch drawing site for more than 13 years! And now it's available in English too! Here you can draw or animate online in Oekaki or Paintchat.