There are lot of things.
Alternatives to Photoshop...
GIMP
The Free & Open Source Image Editor
This is the official website of the GNU Image Manipulation Program (GIMP).
GIMP is a cross-platform image editor available for GNU/Linux, OS X, Windows and more operating systems. It is free software, you can change its source code and distribute your changes.
Whether you are a graphic designer, photographer, illustrator, or scientist, GIMP provides you with sophisticated tools to get your job done. You can further enhance your productivity with GIMP thanks to many customization options and 3rd party plugins.
Paint.NET
Paint.NET is free image and photo editing software for PCs that run Windows. It features an intuitive and innovative user interface with support for layers, unlimited undo, special effects, and a wide variety of useful and powerful tools. An active and growing online community provides friendly help, tutorials, and plugins.
It started development as an undergraduate college senior design project mentored by Microsoft, and is currently being maintained by some of the alumni that originally worked on it. Originally intended as a free replacement for the Microsoft Paint software that comes with Windows, it has grown into a powerful yet simple image and photo editor tool. It has been compared to other digital photo editing software packages such as Adobe® Photoshop®, Corel® Paint Shop Pro®, Microsoft Photo Editor, and The GIMP.
Pixlr
Pixlr is an awesome cloud-based image editor brought to you by Autodesk, the same folks who maintain products like AutoCAD, Maya, and 3DS Max. Pixlr may not be “industry standard” quality, but it’s packed full of useful features and you can rest assured that it won’t go belly-up anytime soon.
Alternatives to Illustrator
Inkscape
Inkscape is professional quality vector graphics software which runs on Windows, Mac OS X and GNU/Linux. It is used by design professionals and hobbyists worldwide, for creating a wide variety of graphics such as illustrations, icons, logos, diagrams, maps and web graphics. Inkscape uses the W3C open standard SVG (Scalable Vector Graphics) as its native format, and is free and open-source software.
Inkscape has sophisticated drawing tools with capabilities comparable to Adobe Illustrator, CorelDRAW and Xara Xtreme. It can import and export various file formats, including SVG, AI, EPS, PDF, PS and PNG. It has a comprehensive feature set, a simple interface, multi-lingual support and is designed to be extensible; users can customize Inkscape's functionality with add-ons.
The Inkscape project has a growing international user community, and many learning materials exist to help get you started with your creations. Help and support is provided by the community, and there are lots of ways for you to get involved if you want to help improve the Inkscape project.
DrawPlus
DrawPlus X8 is a paid solution costs $120 but comes in a Starter Edition that’s 100% free forever. With it you can import and export SVG, use touch-based drawing tablets, animate with keyframes, and have access to all kinds of brushes. It’s a bit limited otherwise, but worth giving a try.
SVG-Edit
Online
SVG-edit is a fast, web-based, javascript-driven SVG drawing editor that works in any modern browser.
Alternatives to Lightroom
Raw Therapee
High Image Quality
96-bit (floating point) processing engine.
Non-destructive editing.
Get the most details and least artifacts from your raw photos thanks to modern and traditional demosaicing algorithms: AMaZE, DCB, AHD, EAHD, HPHD, IGV, LMMSE, VNG4, Mono and Fast.
Advanced color handling from white balance to HSV (Hue-Saturation-Value) curves, color toning and color management including wide-gamut and soft-proofing support.
Powerful CIE Color Appearance Model 2002 (CIECAM02) module.
Enhanced exposure and tonality tools: tone and Lab curves, highlights and shadows tools, tone mapping (HDR-like effect), etc.
Multiple denoising methods: luminance, chrominance (both rewritten in 2012), impulse (for salt and pepper noise) noise reduction.
Several tools to enhance details: unsharp mask, RL deconvolution, contrast by detail levels.
Efficiency
Multi-threaded algorithms for high performance (RawTherapee can utilize modern processor features, like SSE).
Quick thumbnails load lightning fast and are replaced later with live thumbnails.
Batch processing: convert all the developed images at once without loading the processor while you work.
Copy/paste editing parameters from one file to many other. Partially copying and/or pasting is also possible.
Basic tools immediately at your hands.
Parallel editing of multiple images in separate editor tabs, and/or all at once from the file browser.
An optional secondary display can be used.
Darktable
darktable is an open source photography workflow application and raw developer. A virtual lighttable and darkroom for photographers. It manages your digital negatives in a database, lets you view them through a zoomable lighttable and enables you to develop raw images and enhance them.
Photoscape
PhotoScape is a fun and easy photo editing software that enables you to fix and enhance photos.
Key Features
Viewer: View photos in your folder, create a slideshow
Editor: resizing, brightness and color adjustment, white balance, backlight correction, frames, balloons, mosaic mode, adding text, drawing pictures, cropping, filters, red eye removal, blooming, paint brush, clone stamp, effect brush
Batch editor: Batch edit multiple photos
Page: Merge multiple photos on the page frame to create one final photo
Combine: Attach multiple photos vertically or horizontally to create one final photo
Animated GIF: Use multiple photos to create a final animated photo
Print: Print portrait shots, carte de visites(CDV), passport photos
Splitter: Slice a photo into several pieces
Screen Capture: Capture your screenshot and save it
Color Picker: Zoom in on images, search and pick a color
Rename: Change photo file names in batch mode
Raw Converter: Convert RAW to JPG
Paper Print: Print lined, graph, music and calendar paper
Face Search: Find similar faces on the Internet
PhotoScape is provided free of charge.
Alternatives to Premiere Pro
Shotcut
Shotcut is a free, open source, cross-platform video editor.
OpenShot
I am proud to announce the release of OpenShot 2.3.3, which addresses many serious stability issues, and the launch of our amazing new website (www.openshot.org). It's been a busy month so far, and I'm super excited to roll out these improvements!
Lightworks
Lightworks is professional grade software, evidenced by the fact that it has been used in the editing of several high-profile films including Wolf of Wall Street, The King’s Speech, and Pulp Fiction. All told, it’s a formidable competitor to Premiere Pro.
