Here is a selection of software. Some, I have written. Others are by other people, but are software which I use and would recommend.
You can click on the menu on the left to filter on one of those two categories
Notepad++ is a free text editor.
There is a text editor that comes with Microsoft Windows, called Notepad. It doesn't do very much. Notepad++ is a far more intuitive replacement, that is better at things like Search and Replace, indenting lines, selecting whole words / lines / paragraphs etc.
Opera Software produces a range of web browsers; I use their desktop browser for my day-to-day web browsing.
For some time, they've also produced Web Browsers targeted at mobile phones and other handheld devices. Traditionally, they've had two such products. Opera Mobile is designed for high-memory devices, and runs in native code, whereas Opera Mini has been its light-weight cousin.