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makeuseof.com's "Top 5 Free Websites for quality Copyright Free Photos" - shutterstock - dreamstime.com - istockphoto.com - fotolia.com

This is a simple tool to edit your photos online for free. Basically, you can use this free online photo editor to crop/resize an image, retouch a face, apply a few artistic effects and perform color correction easily. Multiple language support is a good point of this image editor.

free lecture videos

Unprofound: a collection of copyright and price-free photos taken by a global collaboration of photographers. For use in educational projects, presentations, curriculum, etc.

50 free collaboration tools for education: this collection has a number of tools that I'd never seen before!

Previously known as Fauxto, Splashup is also a free online tool for enhancing the photos. It is browser friendly and supports various photosharing services as Picasa, Flickr, and Facebook. Splashup has a built up of various photo editing tools such as lasso, blur, brush fill, crop, etc. Multiple windows are allowed which gives it an edge above the rest. Beside, also provides us Splashup Light - a free offline photo editor, works perfectly on our desktop as well as on your mobile PCs.

Free Online OCR: analyze the text in any image for conversion to text files you can edit / view on your computer

Free Online OCR: analyze the text in any image for conversion to text files you can edit / view on your computer

Tableau Public: visualize and share your geo-tagged data FOR FREE and easily - this is a fabulous educational product and must be checked out!

free clipart images for teachers and students, by category

Language Arts / Study Skills: (free) vocabulary learning toolset tracks progress, weeds out words you already know, creates mp3 files of word lists, and has a program for students to earn cash rewards on a pre-paid debit cards as they study

Resources / Blog: "Free Technology for Teachers"

Penzu: a free online diary and personal journal that is focused on privacy. Students can keep their thoughts / reflections and ideas to themselves and share only if they want to.

Mixed ink: a collaborative writing tool that touts itself as a "fun, democratic, and elegant way for people to weave their ideas together" Their service is free.

MakeUseOf.com's guide to free group calling and conference apps

AudioOwl: free audio books. Download mp3, iPod and iTunes formats - for use in writing / literature projects, perhaps supported text?

creative commons music tracks and sound effects (just link to them and you're good to go!)

You have two version choices when use this free online picture editor: Flash & HTML. This is very easy-to-use tool, just select your photo then choose the modifications to apply; although it's still in Beta version you can still choose up to 5 imaging processing functions and 12 special image effects. Wondering what are the good points of this tool? It supports all popular picture file formats (JPG, TIFF, NPG, GIF, BMP, TGA, …) and camera RAW formats (CRW, NEF, RAF, CR2, DNG, …), more than 400 formats supported. That's so powerful imaging solution!

Just with a few basic functions such as: Resize, Crop, Rotate, Brightness & Contrast and some special imaging effects: Blur, Polaroid, Oil Paint, etc but this free online photo editor processed over five million pictures since 2008. The advantages of this editor are simple & clean layout with images, no Flash required and many formats exporting with various quality choices.