This is a list for webpages that provide technical information required to replicate a certain model of stove or combustion chamber, being it paid or free:
J-Rocket Stove. Ianto's design.
Ianto Evan's book. Third Edition.
http://www.cobcottage.com/rocket-mass-heaters-new-edition-iii
Ernie and Erica's book:
https://www.amazon.com/Rocket-Heater-Builders-Guide-Step/dp/0865718237
Ernie and Erica's Everything combo:
https://permies.com/t/40993/Ernie-Erica-Wisner-Rocket-Mass
BBR Rocket Stove. Peter van den Berg design, circa 2014.
Peter van den Berg's web:
https://www.batchrocket.eu/en/
Hacono BBR6 free plans:
https://hacono.com/project/estufa-rocket-bbr6/
Hacono BBR8 free plans:
https://hacono.com/project/estufa-rocket-bbr8/
Danesa Stove. Remix of designs by Pablo Kulbaba/Hacono Estufas, 2020.
Lestufer Plans:
https://lestufer.com.ar/planos/camara-de-combustion/
Lestufer Online Course:
https://lestufer.com.ar/cursos/curso-en-vivo/
Isleña Social Stove. Designed by Adrian Mancuso y Guillermo at Otromodo, 2020.
Otromodo. Builder manual Manual and sketches:
https://otromodo.com.ar/otromodo-estufa-social-manual.pdf
Otromodo. Video manual:
Chuncana Stove. Designed by Edgardo Gailhou, 2018.
Hacono free plans:
https://hacono.com/project/estufa_chuncana_mejorada/
Lestufer online course:
https://www.lestufer.com.ar/productos/estufa-chuncana-curso-grabado-para-autoconstructores-incluyendo-estufa-chuncana-mejorada-refra-esencial-y-ac-modulo-simple-calefaccion-por-aire-forzado/
Rusa Stove. Designed by Eng. Pablo Battro at INTA Argentina, 1994.
INTA free manual:
https://cyt-ar.com.ar/cyt-ar/images/8/8c/Estufa_rusa_de_INTA_Chubut.pdf
Gymse Stove. Designed by late Lars Helbro, Denmark.
I guess his web is down, after his demise.
Masa Térmica's online course:
https://masatermica.shop/productos/curso-de-construccion-de-estufas-gymse/
Institutional Stove (cooking) Original design by Aprovecho Foundation
Aprovecho's resources:
https://aprovecho.org/publications-3/#inst-stoves
50 Liter version "Poderosa" by Hacono estufas. Free plans and step by step guide:
https://hacono.com/project/cocina_institucional_modelo_2024/
30 Liter version "Isonza" by Hacono estufas. Free plans and step by step guide:
https://hacono.com/project/cocina_institucional_isonza_30l/
Barrel oven / mixed oven / chilean oven. Designed by Pedro Serrano at CETAL, 1987
Free handbook:
https://hacono.com/project/uso_eficiente_lena_serrano/
This is a list in progress. Let me know if you find anything to correct/add.