FSL (FMRIB Software Library)
Established neuroimaging suite with graphical interfaces and extensive tools, but not Python-native.
SPM (Statistical Parametric Mapping)
Widely used for fMRI analysis with MATLAB-based environment, differing from Nilearn's Python approach.
AFNI (Analysis of Functional NeuroImages)
Comprehensive neuroimaging software with a focus on fMRI, offering different workflows than Nilearn.
MNE-Python
Specialized for MEG/EEG analysis with some fMRI capabilities, complementary to Nilearn's focus.
Nipype
Workflow engine for neuroimaging pipelines, often used alongside tools like Nilearn for pipeline management.