btree-indexes topic
amcheck
contrib/amcheck from Postgres v11 backported to earlier Postgres versions
pg_hexedit
Open PostgreSQL relation files in a hex editor with tags and annotations
btree4j
Disk-based B+-tree written in Pure Java
BwTree
An open sourced implementation of Bw-Tree in SQL Server Hekaton
bplustree
An on-disk B+tree for Python 3
Learned-Indexes
Implementation of BTree part for paper 'The Case for Learned Index Structures'
DeepDataBase
A relational database engine using B+ tree indexing
postgresql-performance-essentials
PostgreSQL performance essentials in 1 hour
SimpleDB
Database implementation from the scratch. The textbook is shown in the following link.
mxtasking
Task-based framework for automatic synchronization and memory prefetching.