I'll give my rusty memory an attempt.
Around 1995-1996 the
Ettera was released. AFAIK, this was the first log vape. It was discontinued in 1999.
In 2001, Rick released the
Aromazap. It was a square log. Rick would later come out with the Myrtle Zap and then the CRZ (Ceramic Rock Zap). These were
discontinued in 2012.
The
Purple Days came out in 2008 from Tom and Pammy. It was my first log vape and I loved it to death. It was
discontinued in 2011.
The
Woodeez came out in 2009 made by Todd. It was somewhat panned as a PD knockoff and was discontinued in 2012.
Epic Vape (now Epickai) come out in with the
EV1 / EV2 in 2011. Both of those models are no longer made, but Andy now sells the
E-Nano (2012) which is still popular.
In 2011, Alan released the
Toasty Top. Later that year he released the
Heat Island (HI) which is still available today.
The
Underdog also came out in 2011 by Dave. These remain popular and are still available today. It's my daily driver to this day.
In 2012 the
Wychwood was released by a UK forum member @J.R.R. Tokin'. It was the first log made in the UK. It was discontinued shortly thereafter when Cookie (maker) suddenly went dark.
In 2016,
@Ed's TnT released the
WoodScents. It uses the popular Dynavap as it's stem. Ed continues to update it every year and is still available today.
I'm sure I've probably forgotten some, but that's what my stoned brain can still remember. Perhaps I'll update this post if someone points out something that I've forgotten.
Edit to add more vapes:
The
CouchLog from
@Beefcake@420Eng came out in 2021. Made in Germany, it uses ceramic balls as a heat exchanger.
The Cloud Connoisseur Zenith came out in May of this year by
@iDRINKBLEACH. It also has balls
and can run on AC power or a mod. It's a bit of a departure from traditional logs since it is an injector-style vape instead of being stem-based.
The Musa was released in 2016. Based in Germany, it uses a halogen-based heater. It also has a version that can run on a mod.
HomeGrownLogs by
@RastaVapa is another UK-based design that came out in 2016. It appears to have been discontinued around 2019.
The Hot Pod was introduced from Australia by
@hazy in 2012. It was made using Banksia seed pods. It appears to have been discontinued around 2016 (confirmation needed).