DeepL Translator
A good translation tool.
Etymology
A useful resource and a fun place to browse: Online Etymology Dictionary
Internet Archive Book Images
The Internet Archive Book Images, hosted at Flickr, some 5 million copyright-free images, is impossible to search from their main interface, which is here. Workaround: Go to images.google.com. If you want pictures of cats and dogs, type: cat dog site:https://www.flickr.com/photos/internetarchivebookimages/
Or use the form below. When you arrive at google results, click Images to see all results.