Prossimo

Let's get the Rustls TLS library ready to replace OpenSSL in as many projects as possible.
Let's create a memory safe, high performance, fully recursive DNS resolver.
Let's make the utilities that mediate privileges safer.
Let's create a memory safe NTP implementation.
Let's create a memory safe AV1 decoder that delivers great performance.
Let's create a memory safe zlib compression library with great performance.
Let's make it possible to write memory safe drivers for the Linux kernel.
Let's make the network edge memory safe.
Let's make it possible to use memory safe TLS networking in Apache httpd.
Let's make TLS and HTTP networking code in curl memory safe.
Let's improve the tools we use to bring memory safe software to the world.
LLMs are changing almost everything about vulnerabilities.
Test results comparing Rustls performance to other TLS libraries.
Continued support will advance ISRG's mission.
A year of growth and progress.
Creating error messages that are clear and detailed.
Being part of ambitious work like Prossimo is easier than you might think: 100% of our funding comes from charitable donations from companies and people like you.
When you support Prossimo, you’re helping to create a future for the Web that is more memory safe and more secure - and that benefits everyone using it!
Bring greater security to your organization by advocating for memory safe code in your organization!
Many organizations match donations to nonprofits made by employees. Check if your organization has a matching program and double your impact!
Prossimo works to connect maintainers behind the Internet's most critical pieces of software with the people and organizations who want to see Internet security move forward by adopting memory safe languages. Here's the simple framework of how Prossimo works:
By funding, you can support this important work!
Contact us to learn about upcoming Prossimo initiatives: donate@abetterinternet.org
Appreciated securities or mutual fund shares that you’ve owned for more than one year can be excellent charitable gifts.
Please let us know if you are transferring securities at donate@abetterinternet.org. You may also want to email the letter of authorization from your broker.
We accept BTC, BCH, ETH, DOGE, WBTC, and all other currencies supported by BitPay. We are able to accept donations equivalent to $1,000 USD or greater. Please email donate@abetterinternet.org for invoicing.
Recommend a donation to Internet Security Research Group (our parent org) from your gift fund. 100% of your donation will go to support a secure and privacy-respecting Internet.
548 Market St, PMB 77519San Francisco, California 94104-5401
Send all mail or inquiries to:PO Box 18666, Minneapolis, MN 55418-0666, USA
Read all about our nonprofit work this year in our 2025 Annual Report.