What open access journal can I submit with almost no money We are about to finish the development of a bioinformatic tool (plant genomic study) and we want to publish it in an open access journal. The thing is that our institution in Argentina provides no funding for publishing. I've already written to Scientific Reports asking for a APC waiver and they grant us with 20% discount because they have knowledge about our situation. Although a nice bonus, we do not count with the money for paying the remaining (about 1360 USD). We've also written to other journals like frontiers of plant science but still did not receive an answer. 

What journal do you think that we could apply in our situation?

Do you know any institutions that can fund open research for third parties?
I recently published a conference paper (fee was around $500). The paper received good feedback and was well regarded in it's field. After a few weeks, I received an invitation to extent the work for a journal publication published by the same organisation. As I was invited, there'll be no publication fees for the journal.

It's a bit of a long shot, but if you target a small conference with a specific interest and an associated journal, it might be worth a try. 

Disclaimer: I didn't publish at the conference for the journal and the outcome will depend on many factors, such as your research and how it is received. 

Wish you lots of luck in these hard times.