I will list some online services and different kind of software in this post, with a focus on security and privacy, as alternatives to the mainstream shady software out there (as in NSA backdoors and other annoying stuff). I try to keep freedom and open source in mind, but also decentralization. This list consists of web services and regular software for GNU/Linux mainly.
I’m not saying every listed service/software fulfils these values or is top notch. This is primarily a temporary list made for myself, but I hope you can find it useful. More testing is needed to find out if every service suites me or not. I haven’t tried all the listed services, but most of them. Feel free to post some responses to this list in the comments section.
(And one more thing, not every service/software in this list is free, as in “gratis”, but most are.)
Disk Encryption: dm-crypt with LUKS.
Privacy Manager Software: BleachBit.
World Maps: OpenStreetMap.