Forensically offers online all the necessary tools to analyze and discover photos that were retouched or falsified.
This is open source: http://www.getghiro.org/
Not so clean at all with a nice tracker.
Same as in Forensically
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Ghiro is obviously an excellent application, for which I thank you, for those who continually need it for this purpose, but I don’t know if it is worth filling the HD in general with apps that are only needed very occasionally. Also I suppose everyone uses an ad and trackerblocker in the browser. I also prefer OSS applications but in first line good and thrustworth apps. Besides, it is quite possible that Forensically (which is at least 10 years old), is a product of the same developers, in view of the very similar functions of Ghiro.
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I know, include Photoshop include functions which was developed from the creator of GIMP. (resampling), today include online editors, like Lunapic include this (Remove and inpaint). Whenever is possible I use OpenSource apps, but in first line I’m interested in the Privacy Policy and TOS of a soft (I think I am between the few which read this) and for this I know that not all OpenSource is sinonym of privacy, also proprietary soft can have better condicions, f.Exmpl. this one is faultless (Freeware-proprietary SaaS) https://www.ssuitesoft.com/privacypolicy.htm Highly recommended online tools, by the way (Html5)