- Found a paper in Spanish about a Guarani spell-checker being worked on here. However, no option to download was found.
- Guarani: A case study in resource development for quick ramp-up MT 
- Paper that talks about a method for developing quick ramp-up machine translation. Uses Guarani as an example. Written by team of researchers at New Mexico State University, unsure about license.
- Guaraní Concise Dictionary: Guaraní-English, English-Guaraní by A. Scott Britton
- E-book of a English-Guarani dictionary. Licenses is all rights reserved. 
- Glosbe Online Dictionary
- Website containing Guarani dictionaries for several languages here. Website says that some data is licensed.
- Scanned PDF of a introductory Guarani course book (in English) made by the Peace Corps. Unsure of the license.  
- Curso básico de Guaraní CERDET (Centro de Estudios Regionales para el Desarrollo de Tarija)
- PDF in Spanish that teaches the basics of Guarani grammar here. Couldn't find license.
- Spanish Wikibooks page with several links to pages on the grammar of Guarani (free license). 
- The Grammar of Possession: Inalienability, Incorporation and Possessor Ascension in Guarani - Maura Velázquez-Castillo
- Scholarly work on the grammar of Guarani. Focuses on alienable and inalienable possession. The e-book is available online. Copyrighted.
- On the Prosodic Coding of Focus in Paraguayan Guaraní - Cynthia G. Clopper and Judith Tonhauser
- Scholarly paper focused mostly on the phonetics and phonology of Guarani, but does include a large section on the grammar of Guarani. Copyrighted, all rights reserved.
- The Distribution of Differential Object Marking in Paraguayan Guaraní - Cory Adam Shain
- Thesis written on the object marking of direct objects in Guarani. Includes lots of example sentences and an extensive summary of the syntax of Guarani. All rights reserved.
- Word Order in Paraguayan Guaraní - Judith Tonhauser and Erika Colijn
- Scholarly article about word order and grammar of Guarani. Includes lots of example sentences with English translation. All rights reserved.
- Bible Passage Translations
- Wikipedia Pages
- Let's Talk Guarnime 
- Blog written in English by a Peace Corps volunteer in Paraguay. Teaches the grammar of Guarani and contains lots of example text in Guarani along with English translation. Unsure about license, will try to contact author.
- Link to github repository here.
- Resources for machine translation between Guarani and Warlpiri