isk-daemon is described as 'open source database server capable of adding content-based (visual) image searching to any image related website or software' and is an app in the Online Services category. There are more than 10 alternatives to isk-daemon for a variety of platforms, including Online / Web-based, Linux, Google Chrome, Opera and Firefox. The best alternative is TinEye. It's not free, so if you're looking for a free alternative, you could try NooBox or Search by Image. Other great apps like isk-daemon are IQDB (Free), Safe Design (Paid), RevIMG (Paid) and Picitup (Free Personal).
Search by Image is a Firefox extension which enables you to initiate a reverse image search from the right-click context menu or the browser toolbar, and comes with support for more than 30 search engines.
Multi-service image search Upload an image or thumbnail from a file or URL to find it (or similar images) among: Haruhi doujins (Haruhi doujins) Danbooru (anime artwork) Konachan (anime wallpapers) Moe.imouto.
Reverse image search on iPhone, iPad and iPod Touch. Safe Design app is a great tool to find stolen or un-attributed images on the internet. Last check dates, search by name, customizable notifications, icon badges and more.
Picitup is the world leading visual data management provider. offering a wide range of products - visual search engine with similarity and exact features, automatic color extraction and automatic creation of visual catalogs
Google Reverse Search, available at reverse.photos, lets you search by images instead of keywords. Upload a picture from your desktop, tablet or mobile phone, and Google will show all the other web pages on the Internet that have similar images.
Adds an option to the context menu to search with an image on Google, Bing, Yandex, TinEye, SauceNAO, IQDB or custom search engines. You can also choose more than one and they will be shown in a submenu!.