The latest officially reported population of Sao Tome and Principe was 240,254 in 2025 vs 64,747,319 people in South Africa in 2025. In 2026, based on the adjusted UN estimation, the current Sao Tome and Principe's population is 247,495 people compared to 65,829,368 in South Africa.
Population statistics:
- South Africa's population is 266 times bigger than Sao Tome and Principe's.
- Sao Tome and Principe is ranked the 176th most populous country in the world, while South Africa is the 24th.
- The countries together account for 0.8% of the world: 0.003% for Sao Tome and Principe vs 0.79% for South Africa.
- For the last 10 years, Sao Tome and Principe has had an average growth rate of +1.83% per year vs +1.4% in South Africa.
- Since 2006, the population of Sao Tome and Principe has increased from 166K people to 247K (49.4% growth), while South Africa has grown from 50M to 65.8M (31.7% growth).
Sao Tome and Principe vs South Africa: population by year and forecast
| Year | Population | |
|---|---|---|
Sao Tome
|
South Africa
|
|
| 2100 | 538,656 | 94,734,082 |
| 2099 | 537,257 | 94,523,360 |
| 2098 | 535,715 | 94,316,049 |
| 2097 | 534,052 | 94,125,043 |
| 2096 | 532,281 | 93,927,246 |
| 2095 | 530,505 | 93,719,451 |
| 2094 | 528,585 | 93,494,697 |
| 2093 | 526,572 | 93,267,274 |
| 2092 | 524,436 | 93,041,793 |
| 2091 | 522,255 | 92,793,249 |
| 2090 | 519,929 | 92,561,159 |
| 2089 | 517,542 | 92,322,396 |
| 2088 | 515,028 | 92,080,212 |
| 2087 | 512,499 | 91,833,409 |
| 2086 | 509,949 | 91,581,639 |
| 2085 | 507,271 | 91,352,906 |
| 2084 | 504,516 | 91,106,961 |
| 2083 | 501,611 | 90,845,161 |
| 2082 | 498,655 | 90,583,188 |
| 2081 | 495,622 | 90,313,417 |
| 2080 | 492,416 | 90,039,857 |
| 2079 | 489,178 | 89,770,116 |
| 2078 | 485,864 | 89,494,440 |
| 2077 | 482,385 | 89,217,520 |
| 2076 | 478,877 | 88,954,522 |
| 2075 | 475,315 | 88,681,719 |
| 2074 | 471,700 | 88,397,221 |
| 2073 | 468,051 | 88,118,589 |
| 2072 | 464,286 | 87,835,051 |
| 2071 | 460,447 | 87,509,098 |
| 2070 | 456,490 | 87,178,463 |
| 2069 | 452,388 | 86,870,660 |
| 2068 | 448,306 | 86,558,000 |
| 2067 | 444,092 | 86,237,764 |
| 2066 | 439,773 | 85,904,801 |
| 2065 | 435,502 | 85,573,984 |
| 2064 | 431,068 | 85,214,686 |
| 2063 | 426,645 | 84,845,370 |
| 2062 | 422,127 | 84,473,236 |
| 2061 | 417,629 | 84,103,016 |
| 2060 | 413,061 | 83,719,266 |
| 2059 | 408,522 | 83,325,330 |
| 2058 | 403,970 | 82,918,226 |
| 2057 | 399,359 | 82,508,742 |
| 2056 | 394,790 | 82,098,320 |
| 2055 | 390,100 | 81,669,191 |
| 2054 | 385,416 | 81,227,019 |
| 2053 | 380,685 | 80,789,939 |
| 2052 | 375,964 | 80,338,877 |
| 2051 | 371,143 | 79,858,310 |
| 2050 | 366,347 | 79,383,784 |
| 2049 | 361,542 | 78,897,472 |
| 2048 | 356,694 | 78,409,829 |
| 2047 | 351,813 | 77,894,547 |
| 2046 | 346,841 | 77,369,819 |
| 2045 | 341,791 | 76,852,544 |
| 2044 | 336,747 | 76,330,046 |
| 2043 | 331,669 | 75,800,788 |
| 2042 | 326,608 | 75,264,885 |
| 2041 | 321,551 | 74,721,871 |
| 2040 | 316,415 | 74,179,185 |
| 2039 | 311,237 | 73,636,894 |
| 2038 | 306,029 | 73,079,976 |
| 2037 | 300,834 | 72,506,991 |
| 2036 | 295,584 | 71,930,701 |
| 2035 | 290,361 | 71,337,219 |
| 2034 | 285,145 | 70,737,692 |
| 2033 | 279,952 | 70,128,299 |
| 2032 | 274,798 | 69,502,726 |
| 2031 | 269,704 | 68,865,544 |
| 2030 | 264,687 | 68,221,143 |
| 2029 | 259,670 | 67,549,189 |
| 2028 | 254,717 | 66,860,631 |
| 2027 | 249,827 | 66,166,759 |
| 2026 | 245,033 | 65,473,024 |
| 2025 | 240,254 | 64,747,319 |
| 2024 | 235,536 | 64,007,187 |
| 2023 | 230,871 | 63,212,384 |
| 2022 | 226,305 | 62,378,410 |
| 2021 | 221,961 | 61,502,603 |
| 2020 | 217,435 | 60,562,381 |
| 2019 | 213,392 | 59,587,885 |
| 2018 | 210,187 | 58,613,001 |
| 2017 | 206,970 | 57,635,162 |
| 2016 | 203,689 | 57,259,551 |
| 2015 | 200,291 | 56,723,537 |
| 2014 | 196,767 | 55,594,838 |
| 2013 | 193,148 | 54,678,791 |
| 2012 | 189,439 | 53,782,567 |
| 2011 | 185,649 | 52,995,205 |
| 2010 | 181,802 | 52,344,051 |
| 2009 | 177,853 | 51,728,516 |
| 2008 | 173,793 | 51,114,599 |
| 2007 | 169,700 | 50,528,584 |
| 2006 | 165,638 | 49,998,277 |
| 2005 | 161,639 | 49,490,033 |
| 2004 | 157,705 | 48,991,421 |
| 2003 | 153,814 | 48,500,348 |
| 2002 | 149,922 | 48,019,415 |
| 2001 | 146,375 | 47,566,800 |
| 2000 | 144,018 | 47,159,719 |
| 1999 | 142,442 | 46,730,335 |
| 1998 | 140,751 | 46,223,880 |
| 1997 | 138,922 | 45,666,838 |
| 1996 | 136,962 | 45,123,018 |
| 1995 | 134,895 | 44,541,554 |
| 1994 | 132,732 | 44,004,139 |
| 1993 | 130,467 | 43,297,156 |
| 1992 | 128,110 | 42,443,509 |
| 1991 | 125,697 | 41,687,898 |
| 1990 | 122,980 | 40,746,268 |
| 1989 | 119,979 | 39,628,575 |
| 1988 | 116,939 | 38,480,649 |
| 1987 | 113,919 | 37,326,190 |
| 1986 | 111,150 | 36,180,515 |
| 1985 | 108,658 | 35,042,093 |
| 1984 | 106,394 | 33,892,788 |
| 1983 | 104,380 | 32,739,304 |
| 1982 | 102,508 | 31,615,339 |
| 1981 | 100,615 | 30,541,044 |
| 1980 | 98,544 | 29,518,857 |
| 1979 | 96,252 | 28,634,162 |
| 1978 | 93,794 | 27,869,507 |
| 1977 | 91,301 | 27,118,952 |
| 1976 | 88,922 | 26,395,450 |
| 1975 | 86,708 | 25,690,940 |
| 1974 | 84,672 | 24,989,108 |
| 1973 | 82,798 | 24,294,263 |
| 1972 | 81,041 | 23,609,456 |
| 1971 | 79,330 | 22,942,143 |
| 1970 | 77,626 | 22,279,984 |
| 1969 | 76,083 | 21,614,676 |
| 1968 | 74,765 | 20,957,287 |
| 1967 | 73,596 | 20,314,066 |
| 1966 | 72,576 | 19,690,087 |
| 1965 | 71,680 | 19,089,380 |
| 1964 | 70,865 | 18,511,361 |
| 1963 | 70,112 | 17,954,564 |
| 1962 | 69,403 | 17,418,522 |
| 1961 | 68,707 | 16,908,035 |
| 1960 | 68,012 | 16,440,172 |
Data sources: United Nations | World Population Prospects (2026–2100, retrieved 2026-07-08); World Bank | Health (1960–2025, retrieved 2026-07-08).
GeoRank.org/population/sao-tome-and-principe/south-africa | CC BY 
From 2006 to 2016, the population of Sao Tome and Principe increased by 38,051 people (a 23% growth), while South Africa gained 7,261,274 people (a 14.5% growth).
For the next 10 years, from 2016 to 2026, Sao Tome and Principe gained 43,806 people (a 21.5% growth), while South Africa's population increased by 8,569,817 people (a 15% growth).
Sao Tome and Principe was ranked 178th most populous country in 2006 and is 176th in 2026. South Africa was ranked 24th in 2006 and still ranked 24th now.
The UN's World Population Prospects forecasts that in 24 years (in 2050) Sao Tome and Principe's population will grow by 48% to 366,347 people with a rank change from 176th to 175th. The population of South Africa will increase by 20.6% to 79,383,784 people and rank change from 24th to 23rd.
Sao Tome and Principe is projected to reach its peak in 2100 at 539K people compared to the peak of 94.7M people in 2100 for South Africa.
Population growth rate by year
| Year | Growth rate | |
|---|---|---|
|
Sao Tome
|
South Africa
|
|
| 2100 | 0.26% | 0.22% |
| 2099 | 0.29% | 0.22% |
| 2098 | 0.31% | 0.2% |
| 2097 | 0.33% | 0.21% |
| 2096 | 0.33% | 0.22% |
| 2095 | 0.36% | 0.24% |
| 2094 | 0.38% | 0.24% |
| 2093 | 0.41% | 0.24% |
| 2092 | 0.42% | 0.27% |
| 2091 | 0.45% | 0.25% |
| 2090 | 0.46% | 0.26% |
| 2089 | 0.49% | 0.26% |
| 2088 | 0.49% | 0.27% |
| 2087 | 0.5% | 0.27% |
| 2086 | 0.53% | 0.25% |
| 2085 | 0.55% | 0.27% |
| 2084 | 0.58% | 0.29% |
| 2083 | 0.59% | 0.29% |
| 2082 | 0.61% | 0.3% |
| 2081 | 0.65% | 0.3% |
| 2080 | 0.66% | 0.3% |
| 2079 | 0.68% | 0.31% |
| 2078 | 0.72% | 0.31% |
| 2077 | 0.73% | 0.3% |
| 2076 | 0.75% | 0.31% |
| 2075 | 0.77% | 0.32% |
| 2074 | 0.78% | 0.32% |
| 2073 | 0.81% | 0.32% |
| 2072 | 0.83% | 0.37% |
| 2071 | 0.87% | 0.38% |
| 2070 | 0.91% | 0.35% |
| 2069 | 0.91% | 0.36% |
| 2068 | 0.95% | 0.37% |
| 2067 | 0.98% | 0.39% |
| 2066 | 0.98% | 0.39% |
| 2065 | 1.03% | 0.42% |
| 2064 | 1.04% | 0.44% |
| 2063 | 1.07% | 0.44% |
| 2062 | 1.08% | 0.44% |
| 2061 | 1.11% | 0.46% |
| 2060 | 1.11% | 0.47% |
| 2059 | 1.13% | 0.49% |
| 2058 | 1.15% | 0.5% |
| 2057 | 1.16% | 0.5% |
| 2056 | 1.2% | 0.53% |
| 2055 | 1.22% | 0.54% |
| 2054 | 1.24% | 0.54% |
| 2053 | 1.26% | 0.56% |
| 2052 | 1.3% | 0.6% |
| 2051 | 1.31% | 0.6% |
| 2050 | 1.33% | 0.62% |
| 2049 | 1.36% | 0.62% |
| 2048 | 1.39% | 0.66% |
| 2047 | 1.43% | 0.68% |
| 2046 | 1.48% | 0.67% |
| 2045 | 1.5% | 0.68% |
| 2044 | 1.53% | 0.7% |
| 2043 | 1.55% | 0.71% |
| 2042 | 1.57% | 0.73% |
| 2041 | 1.62% | 0.73% |
| 2040 | 1.66% | 0.74% |
| 2039 | 1.7% | 0.76% |
| 2038 | 1.73% | 0.79% |
| 2037 | 1.78% | 0.8% |
| 2036 | 1.8% | 0.83% |
| 2035 | 1.83% | 0.85% |
| 2034 | 1.85% | 0.87% |
| 2033 | 1.88% | 0.9% |
| 2032 | 1.89% | 0.93% |
| 2031 | 1.9% | 0.94% |
| 2030 | 1.93% | 0.99% |
| 2029 | 1.94% | 1.03% |
| 2028 | 1.96% | 1.05% |
| 2027 | 1.96% | 1.06% |
| 2026 | 1.99% | 1.12% |
| 2025 | 2% | 1.16% |
| 2024 | 2.02% | 1.26% |
| 2023 | 2.02% | 1.34% |
| 2022 | 1.96% | 1.42% |
| 2021 | 2.08% | 1.55% |
| 2020 | 1.89% | 1.64% |
| 2019 | 1.52% | 1.66% |
| 2018 | 1.55% | 1.7% |
| 2017 | 1.61% | 0.66% |
| 2016 | 1.7% | 0.94% |
| 2015 | 1.79% | 2.03% |
| 2014 | 1.87% | 1.68% |
| 2013 | 1.96% | 1.67% |
| 2012 | 2.04% | 1.49% |
| 2011 | 2.12% | 1.24% |
| 2010 | 2.22% | 1.19% |
| 2009 | 2.34% | 1.2% |
| 2008 | 2.41% | 1.16% |
| 2007 | 2.45% | 1.06% |
| 2006 | 2.47% | 1.03% |
| 2005 | 2.49% | 1.02% |
| 2004 | 2.53% | 1.01% |
| 2003 | 2.6% | 1% |
| 2002 | 2.42% | 0.95% |
| 2001 | 1.64% | 0.86% |
| 2000 | 1.11% | 0.92% |
| 1999 | 1.2% | 1.1% |
| 1998 | 1.32% | 1.22% |
| 1997 | 1.43% | 1.21% |
| 1996 | 1.53% | 1.31% |
| 1995 | 1.63% | 1.22% |
| 1994 | 1.74% | 1.63% |
| 1993 | 1.84% | 2.01% |
| 1992 | 1.92% | 1.81% |
| 1991 | 2.21% | 2.31% |
| 1990 | 2.5% | 2.82% |
| 1989 | 2.6% | 2.98% |
| 1988 | 2.65% | 3.09% |
| 1987 | 2.49% | 3.17% |
| 1986 | 2.29% | 3.25% |
| 1985 | 2.13% | 3.39% |
| 1984 | 1.93% | 3.52% |
| 1983 | 1.83% | 3.56% |
| 1982 | 1.88% | 3.52% |
| 1981 | 2.1% | 3.46% |
| 1980 | 2.38% | 3.09% |
| 1979 | 2.62% | 2.74% |
| 1978 | 2.73% | 2.77% |
| 1977 | 2.68% | 2.74% |
| 1976 | 2.55% | 2.74% |
| 1975 | 2.4% | 2.81% |
| 1974 | 2.26% | 2.86% |
| 1973 | 2.17% | 2.9% |
| 1972 | 2.16% | 2.91% |
| 1971 | 2.2% | 2.97% |
| 1970 | 2.03% | 3.08% |
| 1969 | 1.76% | 3.14% |
| 1968 | 1.59% | 3.17% |
| 1967 | 1.41% | 3.17% |
| 1966 | 1.25% | 3.15% |
| 1965 | 1.15% | 3.12% |
| 1964 | 1.07% | 3.1% |
| 1963 | 1.02% | 3.08% |
| 1962 | 1.01% | 3.02% |
| 1961 | 1.02% | 2.85% |
Data sources: United Nations | World Population Prospects (2026–2100, retrieved 2026-07-08); World Bank | Health (1961–2025, retrieved 2026-07-08).
GeoRank.org/population/sao-tome-and-principe/south-africa | CC BY
In 2025, the population of Sao Tome and Principe grew by 2%, while South Africa's population grew by 1.16%.
Live population counters
|
Sao Tome
|
South Africa
|
|
|---|---|---|
| Current population |
247495
|
65829368
|
| Population rank | 176/197 | 24/197 |
| Percent of world population | 0.003% | 0.79% |
| One net population change |
1.86 hours
|
42.7 seconds
|
| One birth every |
1.32 hours
|
26.7 seconds
|
| One death every |
6.73 hours
|
53.3 seconds
|
| Daily growth/decline | +13 | +2,028 |
| Annual growth/decline | +4,718 | +740,132 |
| Annual growth/decline rate | +2% | +1.16% |
| Population growth rate rank | 50/197 | 91/197 |
| One migration net change every |
13.5 hours
|
3.6 minutes
|
| Annual migration change | -650 | +146,370 |
| Net migration rank | 90/196 | 9/196 |
| Foreign-born residents | 1,955 | 2,631,100 |
| Foreign-born residents rank | 194/195 | 28/195 |
| Foreign-born share of population | 0.8% | 4.1% |
| Foreign-born share rank | 162/195 | 105/195 |
Natural population change vs migration
| Year | Population change | |||
|---|---|---|---|---|
|
Sao Tome
|
South Africa
|
|||
| Natural | Migration | Natural | Migration | |
| 2025 | - | -650 | - | 146,370 |
| 2024 | 5,315 | -604 | 591,618 | 166,972 |
| 2023 | 5,221 | -592 | 602,793 | 228,222 |
| 2022 | 5,102 | -592 | 603,636 | 233,284 |
| 2021 | 4,954 | -782 | 456,411 | 458,246 |
| 2020 | 4,874 | 0 | 595,873 | 369,901 |
| 2019 | 4,932 | -1,716 | 652,130 | 331,124 |
| 2018 | 4,957 | -1,757 | 648,319 | 318,260 |
| 2017 | 5,007 | -1,779 | 645,975 | 343,146 |
| 2016 | 5,125 | -1,793 | 641,365 | -879,235 |
| 2015 | 5,269 | -1,809 | 668,771 | 641,150 |
| 2014 | 5,381 | -1,801 | 674,754 | 272,697 |
| 2013 | 5,449 | -1,787 | 652,427 | 232,230 |
| 2012 | 5,501 | -1,739 | 643,723 | 264,091 |
| 2011 | 5,445 | -1,616 | 601,708 | 65,166 |
| 2010 | 5,391 | -1,529 | 566,834 | 68,563 |
| 2009 | 5,349 | -1,328 | 554,115 | 41,528 |
| 2008 | 5,297 | -1,203 | 595,332 | 36,869 |
| 2007 | 5,226 | -1,127 | 503,567 | 36,339 |
| 2006 | 5,057 | -1,031 | 487,584 | 33,159 |
| 2005 | 4,897 | -941 | 464,464 | 31,286 |
| 2004 | 4,810 | -894 | 442,540 | 58,924 |
| 2003 | 4,702 | -816 | 415,018 | 65,604 |
| 2002 | 4,591 | -690 | 430,926 | 50,313 |
| 2001 | 4,471 | -1,289 | 484,801 | -60,793 |
| 2000 | 4,334 | -2,798 | 526,963 | -136,794 |
| 1999 | 4,221 | -2,594 | 594,643 | -126,011 |
| 1998 | 4,120 | -2,364 | 627,027 | -82,722 |
| 1997 | 4,041 | -2,153 | 667,969 | -98,181 |
| 1996 | 3,993 | -1,974 | 710,868 | -193,007 |
| 1995 | 3,948 | -1,829 | 743,488 | -98,403 |
| 1994 | 3,860 | -1,644 | 698,609 | -268,849 |
| 1993 | 3,841 | -1,527 | 789,220 | 194,977 |
| 1992 | 3,822 | -1,432 | 794,415 | -71,342 |
| 1991 | 3,801 | -1,362 | 827,296 | -39,131 |
| 1990 | 3,719 | -727 | 835,421 | 259,718 |
| 1989 | 3,576 | -571 | 884,629 | 255,605 |
| 1988 | 3,544 | -465 | 909,221 | 246,382 |
| 1987 | 3,440 | -470 | 922,330 | 231,009 |
| 1986 | 3,180 | -614 | 903,644 | 234,378 |
| 1985 | 3,242 | -828 | 893,889 | 244,940 |
| 1984 | 3,163 | -1,041 | 869,011 | 290,789 |
| 1983 | 3,100 | -1,203 | 837,013 | 310,172 |
| 1982 | 3,047 | -1,203 | 807,550 | 293,195 |
| 1981 | 3,015 | -1,067 | 767,833 | 279,985 |
| 1980 | 2,965 | -770 | 738,415 | 258,127 |
| 1979 | 2,893 | -491 | 716,541 | 56,323 |
| 1978 | 2,800 | -279 | 694,341 | 62,121 |
| 1977 | 2,705 | -255 | 680,929 | 63,739 |
| 1976 | 2,608 | -302 | 675,011 | 27,333 |
| 1975 | 2,515 | -392 | 667,862 | 38,809 |
| 1974 | 2,422 | -474 | 658,438 | 38,518 |
| 1973 | 2,329 | -525 | 651,596 | 41,125 |
| 1972 | 2,232 | -517 | 638,754 | 38,163 |
| 1971 | 2,127 | -430 | 624,761 | 32,961 |
| 1970 | 1,980 | -279 | 605,102 | 61,514 |
| 1969 | 1,862 | -469 | 590,794 | 73,225 |
| 1968 | 1,767 | -520 | 571,841 | 78,932 |
| 1967 | 1,693 | -606 | 553,741 | 81,932 |
| 1966 | 1,642 | -688 | 534,862 | 77,417 |
| 1965 | 1,611 | -765 | 506,632 | 82,514 |
| 1964 | 1,600 | -819 | 490,606 | 76,298 |
| 1963 | 1,609 | -886 | 473,821 | 72,844 |
| 1962 | 1,625 | -927 | 455,634 | 69,771 |
| 1961 | 1,657 | -960 | 437,851 | 57,728 |
| 1960 | 1,547 | -860 | 421,263 | 18,891 |
Data sources: World Bank | Health (1960–2025, retrieved 2026-07-08).
GeoRank.org/population/sao-tome-and-principe/south-africa | CC BY
Over the last 10 years, 81.6% of the population change in Sao Tome and Principe is from natural causes (a gain of 50,756 people) and 18.4% is from migration (a loss of 11,424 people). In South Africa 73.4% is from natural causes (a gain of 6,106,891 people) and 26.6% is from migration (a gain of 2,211,070 people).
As of 2024, 1,955 residents or 0.8% of the population were not native-born in Sao Tome and Principe, compared to 2,631,100 people or 4.1% in South Africa.
Biggest cities by population
|
Sao Tome
|
|
|---|---|
| City | Population |
| Sao Tome | 65.5K |
| Trindade | 6.64K |
|
South Africa
|
|
|---|---|
| City | Population |
| Johannesburg | 4.8M |
| Cape Town | 3.78M |
| Soweto | 1.27M |
| Pretoria | 742K |
| Pietermaritzburg | 619K |
| Durban | 595K |
| Rustenburg | 550K |
| Randburg | 337K |
| Port Elizabeth | 312K |
| East London | 267K |
Compare countries by 7 more topics
Population differences between Sao Tome and Principe and South Africa
|
Sao Tome
|
South Africa
|
|
|---|---|---|
| Life expectancy | 70.3 years | 66.7 years |
| Average age | 25.2 years | 31.3 years |
| Median age | 20.5 years | 29.7 years |
| Male:Female ratio | 49.7:50.3 | 48.7:51.3 |
| Fertility rate | 3.6 births per woman | 2.21 births per woman |
| Population density | 661 ppl/mi² | 139.8 ppl/mi² |
Population map with other countries
Data sources: World Bank | Health (1960–2025, retrieved 2026-07-08); United Nations | World Population Prospects (1960–2026, retrieved 2026-07-08); U.S. Census Bureau (1960–2025, retrieved 2026-07-08); Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-07-08).
GeoRank.org/population/sao-tome-and-principe/south-africa | CC BY
Help us show the world through your eyes
Share a photo of your city and help others discover what it looks like to live there. Your contribution makes our data come alive.
Data sources:
- World Bank | Health (1960–2025, retrieved 2026-07-08)
- United Nations | World Population Prospects (1960–2100, retrieved 2026-07-08)
- U.S. Census Bureau (1960–2025, retrieved 2026-07-08)
- Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-07-08)
- Wikidata (2026, retrieved 2026-07-08)
Creative Commons Attribution (CC BY) — you’re free to copy, share, remix, adapt, and use even commercially as long as you give appropriate credit and clearly indicate if you made changes. Other sources may be subject to different license terms.