Few useful open-source software for your PC

Libre Office

LibreOffice is Free and Open Source Software, available for everyone to use, share and modify, and produced by a worldwide community of hundreds of developers. Its clean interface and feature-rich tools help you unleash your creativity and enhance your productivity. LibreOffice includes several applications that make it the most versatile Free and Open Source office suite on the market: Writer (word processing), Calc (spreadsheets), Impress (presentations), Draw (vector graphics and flowcharts), Base (databases), and Math (formula editing).
LibreOffice is compatible with a wide range of document formats such as Microsoft® Word (.doc, .docx), Excel (.xls, .xlsx), PowerPoint (.ppt, .pptx) and Publisher. But LibreOffice goes much further with its native support for a modern and open standard, the Open Document Format (ODF). With LibreOffice, you have maximum control over your data and content – and you can export your work in many different formats including PDF.

GIMP

GIMP is an acronym for GNU Image Manipulation Program. It is a freely distributed program for such tasks as photo retouching, image composition, and image authoring. Powerful and flexible, open-source image editor GIMP is as close to Adobe Photoshop as you can get without opening your wallet. It supports layers and is packed with advanced tools for enhancing your pictures or creating new ones from scratch.
You can adjust every aspect of your pictures’ appearance manually, or use the dozens of customizable filters and effects to achieve amazing results with just a few clicks. GIMP comes with a huge array of user-created plugins pre-installed, and adding more is a piece of cake.

Audacity

The perfect open-source tool for recording and editing podcasts and music. Even if you have the ready cash for an audio editor, you might choose to stick with open source alternative Audacity. Audacity is the tool of choice for many podcasters, musicians and audiobook narrators thanks to its professional quality results. You can use it to combine clips, copy and paste sections of audio, remove noise and other unwanted noises, strip vocals from songs, alter frequencies, and apply effects like echo and reverb.

OBS Studio

OBS Studio is free and open-source software for video recording and live streaming. Currently Linux, Mac and Windows Builds are available. OBS provides real-time source and device capture, scene composition, encoding, recording, and broadcasting. Transmission of data is primarily done via the RealTime Messaging Protocol (RTMP) and can be sent to any RTMP supporting destination, including many presets for streaming websites such as YouTube, Twitch.tv, Instagram and Facebook.

Station

Station is the first smart browser for busy people. A single place for all of your web applications. Station is a free desktop application that unifies all your work tools in one neat & productive interface. It is an alternative to your browser that's entirely dedicated to web applications you use at work, and that's designed to help you focus and get work done.