| Name | Lines of code | Maintainability | Test coverage |
| src/libertem/udf/com.py | 595 | C 1 day | |
| src/libertem/io/dataset/frms6.py | 596 | C 1 day | |
| client/src/messages.ts | 609 | D 2 days | |
| src/libertem/executor/dask.py | 693 | D 1 day | |
| src/libertem/io/dataset/hdf5.py | 729 | D 2 days | |
| src/libertem/common/buffers.py | 825 | D 2 days | |
| src/libertem/io/dataset/k2is.py | 849 | D 2 days | |
| src/libertem/executor/pipelined.py | 1,005 | D 3 days | |
| src/libertem/io/dataset/mib.py | 1,005 | F 3 days | |
| src/libertem/api.py | 1,483 | F 6 days | |
| src/libertem/udf/base.py | 2,244 | F 1 wk |