No matter what you do or what your business is, you will need a few software for your business sooner or later, beyond the ones I mentioned on day_one. The following list is a hand-picked and curated list of software that will get the job done in many categories and will cost you no money for what they do.
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Students usually ask for a good, on-line dictionary. There are tens of great dictionaries on-line. Some of them are better than the others. Some give more details and some are designed for more advanced audiences. The following dictionaries, not open-source but free, will give you all you need for our courses, and some:
If you want to type a mathematical symbol, and you don’t know how to make it, you can go to the following website, search for it, and then copy/paste that symbol into your word-processor or spreadsheet. e.g. x̄, x̿, ȳ, σ, R̄, etc.
This addon (or extension in Google Chrome lexicon) will protect your browsing on the internet and blocks your browser from connecting to sources of advertising, malware, tracking, finger-printing, and many other online problems.
It comes with several filters and lists pre-installed and works right out of the box. It does not need a lot of configurations to work its magic. Your internet life will never be the same after you installed uBlock Origin.
Note that there are imitators on the market. You need to pay attention to the full name and the name of the developer of this gem who is gorhil. Stay clear of any other software with similar, but not exactly the same name, or other authors.
Change your DNS configurations to match the followings (you can get the instructions here). This way, not only you will protect yourself from a lot of issues, but also you will protect everyone who uses your computer for any purpose. Even better, you can setup these primary/secondary DNS settings in your router, the hot point everyone uses to connect to the Internet via Wi-Fi, to protect everyone who uses your internet via your Wi-Fi. How coll is that! 🥳
Again, full instructions can be seen here. For instance, if you have a Windows 10 PC, this is what you need to do, macOS can do it like this, and so on.
All businesses must encrypt their data both in transit and at rest. While the in-transit encryption is too complicated for this list, you can still use very simple, open source, and free software to encrypt your data at rest.
Most problems in most businesses are directly or indirectly related to how people use or misuse passwords. You can trace a huge number of data breaches, ransomware attacks, and security risks directly to passwords. People use weak passwords, reuse a password for different services, write their password on Post-It notes and stick them on their fridges, give them to their friends and forget they did so, and so on.
Everywhere we look, there are numerous problems with how people deal with passwords. Now, almost all organisations, companies, and even individuals are paying for these mistakes. You need to start using a password manager.