GitHub git repositories and community features. Github is
free for open source projects. All paid accounts have unlimited private repositories. My repos are in /ansdell.
GitLab git repositories with large file support,
issue tracking and wikis. Available to run on your own servers as a free community edition and as an enterprise
edition. The enterprise addition is also available hosted by GitLab for free public and private
repositories.
VPS, transit and hosting services
Digital Ocean sells virtual servers, of various
sizes and running a range of software distributions in several global locations, by the hour or the month.
This is a referral link: at the
time of writing, a new customer using this link would get a $10 credit. I have two Digital Ocean droplets
running CentOS 7.5.1804. These complement a local
server running Debian 9.1 and a remote server running CentOS 7.5.1804.
Hurricane Electric IPv4 and IPv6 backbone
and transit network operator. HE also provides
Linode instant Linux VPS
deployment. I have
a referral link for
linode.com: at the time of writing it gives a $20 service credit when opening a new account.
DNS performance comparison
by Nykolas Z in Medium, April 2018, looks at Google 8.8.8.8, 9.9.9.9 (usingIBM address space), Cloudflare
1.1.1.1,OpenDNS and more.
Coding workspaces
codepen.io for web front-end demonstrations and testing.
Pens can be embedded and are editable and responsive. Has a huge range of options and facilities including PHP
and CSS linting; and testing pens using a free crossbrowsertesting.com service. All public pens are under an MIT licence.
Glot.io hosts and runs snippets server-side in a range of
languages. Glot.io has an API and is open
source.
jsbin provides live collaborative HTML, CSS and JavaScript
pastebins. Paid accounts have Dropbox sync and private bins.
Pastebin.com for storing and sharing code snippets. Pro
users have https links after login..
TLS certificates, public keys and related services
AlwaysOnSSL free, automated
Certification Authority run by CertCenter and DigiCert.
keybase.io public directory of auditable public keys.
letsencrypt.org offer free 90-day Domain Validation
certificates, including wildcards, intended for automated deployment.
Dropbox file synchronisation service. The software is
not wholly free or open-source but it does have clients for both GNU/Linux and Android. Dropbox offers some
free space and has useful attributes including O’Reilly book synchronisation. With personal accounts,
prior versions are kept for 30 days by default: on Pro accounts this can be extended to a year with the
chargeable Extended History add-on; some older accounts may have opted to retain the discontinued Packrat
option that offered unlimited deletion recovery and version history. Business accounts have unlimited version
history by default. On Android devices, and on desktops where the Dropbox Professional service is in use, the
Dropbox app only holds active files locally, reducing the need for storage space.
OneDrive from Microsoft provides cloud
backup and synchronisation. Plans range from 5GB free plans to 1TB per user with Office 365 plans. Clients are available for Android and other
platforms, Web access is also supported.
Protonmail.ch secure mail service,
headquartered in Switzerland. Android app available, as are own domains, multiple users and an associated VPN
service.
Nitrokey make two-factor authentication hardware and
most products are open-source.
Pushover provides an API to send notifications to
Android and some other devices. Generous free tier available for sent messages; about $5 per platform for
receiving devices. Colin Shea has an example on his blog of creating
alerts for system shutdown and boot.
SE Ranking SEO monitoring for web sites over
multiple search engines.
UpTimeRobot provides up to 50 instances of monitors
for internet services at no less than 5-minute intervals with alerting and a day’s logs for free. Paid
plans can have more monitors, SMS notification and shorter intervals between probes.