Daniel Stenberg's keynote at the Openforum Europe event "Open Source Driving the European Digital Decade" on April 18, 2023

1. 25 years, 20,000 Daniel-hours, 10 billion installations, on 92 operating systems, for 28 CPU architectures, running
on Mars, 2,800 contributors, a gold medal, 16 years non-breaking API, open source, 28 protocols, 160,000 lines of
code, independent, 1100 authors, 250 command line options. Never stop.
Daniel Stenberg
April 18, 2023
open free libre gratis

2. Once upon the time...
@bagder

3. I made a little internet transfer tool
@bagder

4. …and put it online as open source
@bagder

5. curl 1998
HTTP
Gopher
FTP
@bagder

6. … and time passed...
@bagder

7. … and time passed...
@bagder

8. … and time passed...
@bagder

9. DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP,
IMAPS, LDAP, LDAPS, POP3, POP3S, RTMP, RTMPS, RTSP, SCP, SFTP,
SMB, SMBS, SMTP, SMTPS, TELNET, TFTP, WS and WSS
TLS certificates, HTTP POST, HTTP PUT, FTP upload, HTTP form
based upload, proxies (SOCKS4, SOCKS5, HTTP and HTTPS),
HTTP/2, HTTP/3, cookies, user+password authentication (Basic,
Plain, Digest, CRAM-MD5, SCRAM-SHA, NTLM, Negotiate, Kerberos,
Bearer tokens and AWS Sigv4), file transfer resume, proxy
tunneling, HSTS, Alt-Svc, unix domain sockets, HTTP compression
(gzip, brotli and zstd), etags, parallel transfers, DNS-over-HTTPS
and much more
@bagder

10. @bagder
@bagder

11. @bagder
curl runs in all your devices

12. 92 operating systems
@bagder
Syllable OS TPF
Tizen
Symbian
Tru64
SunOS
tvOS ucLinux
Genode Hurd
iOS
Integrity
Illumos
HP-UX
HardenedBSD
Haiku
z/OS
Nintendo
Switch
NonStop OS
NetWare
MorphOS MPE/iX MS-DOS NCR MP-RAS NetBSD
RISC OS
Redox
ReactOS Sailfish OS
SCO Unix Serenity SINIX-Z
Qubes OS
UnixWare
WebOS
vxWorks
VMS
Windows
UNICOS
Windows CE
Wii System
Software
AmigaOS Blackberry 10
BeOS
Android
Blackberry
Tablet OS
AIX Cell OS
Aros
IRIX
RTEMS
Mbed
Micrium
macOS
Mac OS 9
Linux Lua RTOS
eCOS
FreeRTOS
FreeBSD
FreeDOS
Fuchsia
DragonFly
BSD
Cygwin
Cisco IOS
OpenBSD OS/2 OS/400
Ultrix
ipadOS
NuttX
Solaris
Xbox
System
Chrome OS
MINIX
Garmin OS
QNX
PlayStation
Portable
Plan 9
OS21
OpenStep Orbis OS
z/TPF z/VM z/VSE
Operating systems known to have run curl
Atari FreeMiNT
DR DOS
OmniOS
Zephyr
watchOS
Xenix
DG/UX

13. 28 CPU architectures
@bagder
Nios
ARM
ARC
Alpha
Itanium
m88k
m68k
OpenRISC
RISC-V
PowerPC
POWER
AVR32
MicroBlaze
s390 SPARC
x86
VAX
Tilera
SH4
MIPS
CPU architectures known to have run curl
HP-PA
ETRAX LoongArch
CompactRISC
Elbrus
Xtensa z/arch
C-SKY

14. 2 planets
@bagder
Planets known to have run curl

15. >10,000,000,000
installations
@bagder

16. Subject: Multimedya isc-v:85
I have toyota corola with multimedya
system that you have its copyright. I
need a advice to know how to use the gps.
Master of many things
@bagder

17. @bagder
TV and movies Hackad
Silk Road
Mr Robot Tschugger

18. Why use libcurl?
Stable well-documented API – examples from 2000 still work
Same API everywhere – 92 OSs, 28 CPU archs...
Open source – free and immortal
Rock solid – battle proven, furiously maintained, secure
Customizable – use what you want, disable what you don’t
Internet hardened – speaks protocols the way that works
Multiple protocols – 50% of users use more than two!
Keeps up – TLS 1.3, HTTP/2, HTTP/3, ...
@bagder

19. Why Open Source?
There was never any alternative to me
Wanted to contribute back
Would never even come close unless
No, I would not be rich otherwise
@bagder
@bagder

20. How?
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21. Contributors
2,800 in total
50-70 per release
Small core team
Volunteers
@bagder

22. Independent
@bagder

23. Everything is
public
@bagder

24. mailing lists
@bagder

25. @bagder
https: github.com/curl

26. a selected few
have push rights
@bagder

27. C89
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28. Official curl sponsors April 2023
@bagder

29. Let's make it personal
This is the lead
developer of this project
@bagder

30. curl for
business
curl for fun
Me, curl and wolfSSL
@bagder

31. Money flows
@bagder
@bagder
Sponsors Customers
events &
stickers

32. … and time passed...
@bagder

33. … and time passed...
@bagder

34. I still lead the development
Two hours spare time per day
Every day, every week, every year, since 1998
Part time paid since 2014
Full time since 2019
Yes, I totally mix and blur spare time and work!
@bagder
@bagder

35. Security issues
Release management
Web site admin
Mailing list admin
Patch reviewing
User support
Blogging about it
What’s maintaining?
Debugging
Patch merging
Feature development
Write documentation
Event planning
Getting stickers
Doing talks
@bagder

36. “The created economic value
cannot be overstated.”
@bagder
@bagder

37. Where does the road lead from here?
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38. Future
@bagder
@bagder

39. Everything eventually runs curl
If it isn’t powered now, it will be soon
If it is powered, it will be networked
If it is networked, it needs Internet access
If it needs Internet access, curl helps
@bagder
@bagder

40. sewing machine, microwave, advertisement sign, kitchen scale, electric
razor, kitchen oven, fan, dog collar, bicycle computer, power plug, piano,
child monitor, radiator, vacuum cleaner, escooter, lawn mower, air
conditioner, printer, projector, kettle, bluray player, set top box, computer
monitor, alarm clock, clothes iron, powertool, exercise equipment, mouse,
wifi router, car, headphones, electric toothbrush, bluetooth speaker, air
purifier, doorbell, watch, game console, keychain fob, flashlight,
ebook-tablet, washing machine, stereo equipment, ebike, tv, toaster,
thermostat, door lock, drilling machine, fridge and freezer, lamp switch,
clothing, bathroom scale, camera, smart phone, garage door opener,
medical device, bus-stop sign, stove, blender, light bulb, tablet
Everything will be networked
@bagder
@bagder

41. All network technologies
Bluetooth 5, Wifi 6, 5G/6G, TbE etc drive
more networking
More networking means more curl
@bagder
@bagder

42. More Open Source everywhere
Everything contains Open Source
Open Source use is growing
Doing and using Open Source is easier
@bagder
@bagder

43. @bagder
more everywhere
@bagder
stuff
time

44. @bagder
@bagder
You can help!

45. Daniel Stenberg
@bagder
https://daniel.haxx.se/
Thank you!
Questions?
@bagder

46. License
This presentation and its contents are
licensed under the Creative Commons
Attribution 4.0 license:
http://creativecommons.org/licenses/by/4.0/
@bagder